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Finding the Fourth Proportional to 381,353.01, 572,033.57 and 115,115.73

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Solution

The fourth proportional to 381,353.01, 572,033.57 and 115,115.73 is: 172,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,353.01 : 572,033.57 = 115,115.73 : x
  2. Step 2: Convert to fraction form
    381,353.01/572,033.57 = 115,115.73/x
  3. Step 3: Cross multiply
    381,353.01x = 572,033.57 × 115,115.73
  4. Step 4: Simplify right side
    381,353.01x = 65,850,061,419.48
  5. Step 5: Solve for x
    x = 65,850,061,419.48/381,353.01
  6. Step 6: Final answer
    x = 172,674.82

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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.