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Finding the Fourth Proportional to 381,418.27, 572,110.54 and 115,170.61

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Solution

The fourth proportional to 381,418.27, 572,110.54 and 115,170.61 is: 172,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,418.27 : 572,110.54 = 115,170.61 : x
  2. Step 2: Convert to fraction form
    381,418.27/572,110.54 = 115,170.61/x
  3. Step 3: Cross multiply
    381,418.27x = 572,110.54 × 115,170.61
  4. Step 4: Simplify right side
    381,418.27x = 65,890,319,881.57
  5. Step 5: Solve for x
    x = 65,890,319,881.57/381,418.27
  6. Step 6: Final answer
    x = 172,750.82

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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.