пропорционалност означава в английски

proportion [proportions]▼(the relation of one part to another or to the whole with respect to magnitude, quantity, or degree)
noun
[UK: prə.ˈpɔːʃ.n̩] [US: prə.ˈpɔːr.ʃn̩]

proportionality [proportionalities]▼(the property of being proportional)
noun
[UK: prə.ˌpɔː.ʃə.ˈnæ.lɪ.ti] [US: prə.ˌpɔːr.ʃə.ˈnæ.lə.ti]