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Finding the Fourth Proportional to 381,382.92, 572,166.87 and 115,127.53

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Solution

The fourth proportional to 381,382.92, 572,166.87 and 115,127.53 is: 172,719.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,382.92 : 572,166.87 = 115,127.53 : x
  2. Step 2: Convert to fraction form
    381,382.92/572,166.87 = 115,127.53/x
  3. Step 3: Cross multiply
    381,382.92x = 572,166.87 × 115,127.53
  4. Step 4: Simplify right side
    381,382.92x = 65,872,158,490.93
  5. Step 5: Solve for x
    x = 65,872,158,490.93/381,382.92
  6. Step 6: Final answer
    x = 172,719.21

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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.