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Finding the Fourth Proportional to 462,363.47, 693,545.21 and 129,939.47

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Solution

The fourth proportional to 462,363.47, 693,545.21 and 129,939.47 is: 194,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,363.47 : 693,545.21 = 129,939.47 : x
  2. Step 2: Convert to fraction form
    462,363.47/693,545.21 = 129,939.47/x
  3. Step 3: Cross multiply
    462,363.47x = 693,545.21 × 129,939.47
  4. Step 4: Simplify right side
    462,363.47x = 90,118,895,979.08
  5. Step 5: Solve for x
    x = 90,118,895,979.08/462,363.47
  6. Step 6: Final answer
    x = 194,909.20

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Similar ratio
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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.