Finding the Fourth Proportional to 291,440,257.92, 402,187,947.84 and 167,678,452.80
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Solution
The fourth proportional to 291,440,257.92, 402,187,947.84 and 167,678,452.80 is: 231,396,490.35
Step by Step Solution
- Step 1: Write the proportion equation
291,440,257.92 : 402,187,947.84 = 167,678,452.80 : x - Step 2: Convert to fraction form
291,440,257.92/402,187,947.84 = 167,678,452.80/x - Step 3: Cross multiply
291,440,257.92x = 402,187,947.84 × 167,678,452.80 - Step 4: Simplify right side
291,440,257.92x = 67,438,252,828,618,304 - Step 5: Solve for x
x = 67,438,252,828,618,304/291,440,257.92 - Step 6: Final answer
x = 231,396,490.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.