British Columbia (Canada) is 43% larger than Alberta (Canada).
Alberta is a province of Canada. With a population of 3,645,257 in 2011 and an estimated population of 4,082,571 as of January 1, 2014, it is Canada's fourth-most populous province and most populous of Canada's three prairie provinces. Wikipedia
British Columbia, also commonly referred to by its initials BC, is a province located on the west coast of Canada. British Columbia is also a component of the Pacific Northwest, along with the U.S. states of Oregon and Washington. Wikipedia