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Finding the Fourth Proportional to 228,793.47, 315,628.17 and 143,957.31

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Solution

The fourth proportional to 228,793.47, 315,628.17 and 143,957.31 is: 198,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,793.47 : 315,628.17 = 143,957.31 : x
  2. Step 2: Convert to fraction form
    228,793.47/315,628.17 = 143,957.31/x
  3. Step 3: Cross multiply
    228,793.47x = 315,628.17 × 143,957.31
  4. Step 4: Simplify right side
    228,793.47x = 45,436,982,313.42
  5. Step 5: Solve for x
    x = 45,436,982,313.42/228,793.47
  6. Step 6: Final answer
    x = 198,593.88

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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.