Finding the Fourth Proportional to 431,371,373.80, 647,057,060.70 and 239,895,149.80
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Solution
The fourth proportional to 431,371,373.80, 647,057,060.70 and 239,895,149.80 is: 359,842,724.70
Step by Step Solution
- Step 1: Write the proportion equation
431,371,373.80 : 647,057,060.70 = 239,895,149.80 : x - Step 2: Convert to fraction form
431,371,373.80/647,057,060.70 = 239,895,149.80/x - Step 3: Cross multiply
431,371,373.80x = 647,057,060.70 × 239,895,149.80 - Step 4: Simplify right side
431,371,373.80x = 155,225,850,505,774,208 - Step 5: Solve for x
x = 155,225,850,505,774,208/431,371,373.80 - Step 6: Final answer
x = 359,842,724.70
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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.