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Finding the Fourth Proportional to 381,372.83, 572,151.89 and 115,117.43

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Solution

The fourth proportional to 381,372.83, 572,151.89 and 115,117.43 is: 172,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,372.83 : 572,151.89 = 115,117.43 : x
  2. Step 2: Convert to fraction form
    381,372.83/572,151.89 = 115,117.43/x
  3. Step 3: Cross multiply
    381,372.83x = 572,151.89 × 115,117.43
  4. Step 4: Simplify right side
    381,372.83x = 65,864,651,710.10
  5. Step 5: Solve for x
    x = 65,864,651,710.10/381,372.83
  6. Step 6: Final answer
    x = 172,704.10

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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.