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Finding the Fourth Proportional to 381,954.98, 572,961.39 and 115,737.38

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Solution

The fourth proportional to 381,954.98, 572,961.39 and 115,737.38 is: 173,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,954.98 : 572,961.39 = 115,737.38 : x
  2. Step 2: Convert to fraction form
    381,954.98/572,961.39 = 115,737.38/x
  3. Step 3: Cross multiply
    381,954.98x = 572,961.39 × 115,737.38
  4. Step 4: Simplify right side
    381,954.98x = 66,313,050,119.76
  5. Step 5: Solve for x
    x = 66,313,050,119.76/381,954.98
  6. Step 6: Final answer
    x = 173,614.83

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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.