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Finding the Fourth Proportional to 258,737.14, 387,644 and 140,332.96

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Solution

The fourth proportional to 258,737.14, 387,644 and 140,332.96 is: 210,249.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,737.14 : 387,644 = 140,332.96 : x
  2. Step 2: Convert to fraction form
    258,737.14/387,644 = 140,332.96/x
  3. Step 3: Cross multiply
    258,737.14x = 387,644 × 140,332.96
  4. Step 4: Simplify right side
    258,737.14x = 54,399,229,946.24
  5. Step 5: Solve for x
    x = 54,399,229,946.24/258,737.14
  6. Step 6: Final answer
    x = 210,249.02

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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.