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Finding the Fourth Proportional to 381,757.76, 572,542.06 and 129,032.67

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Solution

The fourth proportional to 381,757.76, 572,542.06 and 129,032.67 is: 193,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,757.76 : 572,542.06 = 129,032.67 : x
  2. Step 2: Convert to fraction form
    381,757.76/572,542.06 = 129,032.67/x
  3. Step 3: Cross multiply
    381,757.76x = 572,542.06 × 129,032.67
  4. Step 4: Simplify right side
    381,757.76x = 73,876,630,689.10
  5. Step 5: Solve for x
    x = 73,876,630,689.10/381,757.76
  6. Step 6: Final answer
    x = 193,517.04

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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.