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Finding the Fourth Proportional to 231,807.68, 347,765.76 and 71,875.20

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Solution

The fourth proportional to 231,807.68, 347,765.76 and 71,875.20 is: 107,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,807.68 : 347,765.76 = 71,875.20 : x
  2. Step 2: Convert to fraction form
    231,807.68/347,765.76 = 71,875.20/x
  3. Step 3: Cross multiply
    231,807.68x = 347,765.76 × 71,875.20
  4. Step 4: Simplify right side
    231,807.68x = 24,995,733,553.15
  5. Step 5: Solve for x
    x = 24,995,733,553.15/231,807.68
  6. Step 6: Final answer
    x = 107,829.62

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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.