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Finding the Fourth Proportional to 257,992.52, 387,013.20 and 100,233.12

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Solution

The fourth proportional to 257,992.52, 387,013.20 and 100,233.12 is: 150,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,992.52 : 387,013.20 = 100,233.12 : x
  2. Step 2: Convert to fraction form
    257,992.52/387,013.20 = 100,233.12/x
  3. Step 3: Cross multiply
    257,992.52x = 387,013.20 × 100,233.12
  4. Step 4: Simplify right side
    257,992.52x = 38,791,540,517.18
  5. Step 5: Solve for x
    x = 38,791,540,517.18/257,992.52
  6. Step 6: Final answer
    x = 150,359.17

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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.