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Finding the Fourth Proportional to 258,266.88, 387,517.10 and 131,841.88

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Solution

The fourth proportional to 258,266.88, 387,517.10 and 131,841.88 is: 197,822.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,266.88 : 387,517.10 = 131,841.88 : x
  2. Step 2: Convert to fraction form
    258,266.88/387,517.10 = 131,841.88/x
  3. Step 3: Cross multiply
    258,266.88x = 387,517.10 × 131,841.88
  4. Step 4: Simplify right side
    258,266.88x = 51,090,981,368.15
  5. Step 5: Solve for x
    x = 51,090,981,368.15/258,266.88
  6. Step 6: Final answer
    x = 197,822.43

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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.