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Finding the Fourth Proportional to 258,872, 387,747.10 and 125,473.19

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Solution

The fourth proportional to 258,872, 387,747.10 and 125,473.19 is: 187,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,872 : 387,747.10 = 125,473.19 : x
  2. Step 2: Convert to fraction form
    258,872/387,747.10 = 125,473.19/x
  3. Step 3: Cross multiply
    258,872x = 387,747.10 × 125,473.19
  4. Step 4: Simplify right side
    258,872x = 48,651,864,922.88
  5. Step 5: Solve for x
    x = 48,651,864,922.88/258,872
  6. Step 6: Final answer
    x = 187,937.92

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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.