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Finding the Fourth Proportional to 234,487.20, 351,806.13 and 76,679.76

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Solution

The fourth proportional to 234,487.20, 351,806.13 and 76,679.76 is: 115,044.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,487.20 : 351,806.13 = 76,679.76 : x
  2. Step 2: Convert to fraction form
    234,487.20/351,806.13 = 76,679.76/x
  3. Step 3: Cross multiply
    234,487.20x = 351,806.13 × 76,679.76
  4. Step 4: Simplify right side
    234,487.20x = 26,976,409,614.93
  5. Step 5: Solve for x
    x = 26,976,409,614.93/234,487.20
  6. Step 6: Final answer
    x = 115,044.27

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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.