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Finding the Fourth Proportional to 311,202.60, 466,631.10 and 133,679.40

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Solution

The fourth proportional to 311,202.60, 466,631.10 and 133,679.40 is: 200,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,202.60 : 466,631.10 = 133,679.40 : x
  2. Step 2: Convert to fraction form
    311,202.60/466,631.10 = 133,679.40/x
  3. Step 3: Cross multiply
    311,202.60x = 466,631.10 × 133,679.40
  4. Step 4: Simplify right side
    311,202.60x = 62,378,965,469.34
  5. Step 5: Solve for x
    x = 62,378,965,469.34/311,202.60
  6. Step 6: Final answer
    x = 200,444.87

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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.