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Finding the Fourth Proportional to 381,759.95, 572,545.29 and 129,034.82

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Solution

The fourth proportional to 381,759.95, 572,545.29 and 129,034.82 is: 193,520.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,759.95 : 572,545.29 = 129,034.82 : x
  2. Step 2: Convert to fraction form
    381,759.95/572,545.29 = 129,034.82/x
  3. Step 3: Cross multiply
    381,759.95x = 572,545.29 × 129,034.82
  4. Step 4: Simplify right side
    381,759.95x = 73,878,275,574.27
  5. Step 5: Solve for x
    x = 73,878,275,574.27/381,759.95
  6. Step 6: Final answer
    x = 193,520.24

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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.