Finding the Fourth Proportional to 220,752,493.80, 331,128,740.70 and 75,137,659.80
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Solution
The fourth proportional to 220,752,493.80, 331,128,740.70 and 75,137,659.80 is: 112,706,489.70
Step by Step Solution
- Step 1: Write the proportion equation
220,752,493.80 : 331,128,740.70 = 75,137,659.80 : x - Step 2: Convert to fraction form
220,752,493.80/331,128,740.70 = 75,137,659.80/x - Step 3: Cross multiply
220,752,493.80x = 331,128,740.70 × 75,137,659.80 - Step 4: Simplify right side
220,752,493.80x = 24,880,238,668,719,012 - Step 5: Solve for x
x = 24,880,238,668,719,012/220,752,493.80 - Step 6: Final answer
x = 112,706,489.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.