Finding the Fourth Proportional to 220,752,511.80, 331,128,767.70 and 67,378,639.20
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Solution
The fourth proportional to 220,752,511.80, 331,128,767.70 and 67,378,639.20 is: 101,067,958.80
Step by Step Solution
- Step 1: Write the proportion equation
220,752,511.80 : 331,128,767.70 = 67,378,639.20 : x - Step 2: Convert to fraction form
220,752,511.80/331,128,767.70 = 67,378,639.20/x - Step 3: Cross multiply
220,752,511.80x = 331,128,767.70 × 67,378,639.20 - Step 4: Simplify right side
220,752,511.80x = 22,311,005,767,598,916 - Step 5: Solve for x
x = 22,311,005,767,598,916/220,752,511.80 - Step 6: Final answer
x = 101,067,958.80
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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.