For me personally:
Deadlift: 505
Beast Lift: 590 (deadlift with the bar behind the legs)
Flat Bench: 380 (probabally closer to 400 before the hurricane)
Incline Bench: 375 (likely higher as well)
Squats: Dont do em!
At around 188-191lbs and 5'8. Everyone is different though, and body structure, years training and the type of training along with many other factors will determine the results. I guess Id consider a 405lb bench and a 600lb deadlift "proportionate", but we all tend to have our twisted little perspectives on these things. Weight lifting becomes an addiction for many, and I know for me, satisfaction seems almost impossible. Just keep training hard in all movements and your body should take care of the rest.