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Finding the Fourth Proportional to 397,044.43, 547,920.89 and 215,755.93

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Solution

The fourth proportional to 397,044.43, 547,920.89 and 215,755.93 is: 297,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,044.43 : 547,920.89 = 215,755.93 : x
  2. Step 2: Convert to fraction form
    397,044.43/547,920.89 = 215,755.93/x
  3. Step 3: Cross multiply
    397,044.43x = 547,920.89 × 215,755.93
  4. Step 4: Simplify right side
    397,044.43x = 118,217,181,188.38
  5. Step 5: Solve for x
    x = 118,217,181,188.38/397,044.43
  6. Step 6: Final answer
    x = 297,742.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.