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Finding the Fourth Proportional to 234,933.70, 351,680.55 and 129,429.70

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Solution

The fourth proportional to 234,933.70, 351,680.55 and 129,429.70 is: 193,747.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,933.70 : 351,680.55 = 129,429.70 : x
  2. Step 2: Convert to fraction form
    234,933.70/351,680.55 = 129,429.70/x
  3. Step 3: Cross multiply
    234,933.70x = 351,680.55 × 129,429.70
  4. Step 4: Simplify right side
    234,933.70x = 45,517,908,082.34
  5. Step 5: Solve for x
    x = 45,517,908,082.34/234,933.70
  6. Step 6: Final answer
    x = 193,747.89

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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.