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Finding the Fourth Proportional to 283,791.60, 391,631.76 and 156,469.32

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Solution

The fourth proportional to 283,791.60, 391,631.76 and 156,469.32 is: 215,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,791.60 : 391,631.76 = 156,469.32 : x
  2. Step 2: Convert to fraction form
    283,791.60/391,631.76 = 156,469.32/x
  3. Step 3: Cross multiply
    283,791.60x = 391,631.76 × 156,469.32
  4. Step 4: Simplify right side
    283,791.60x = 61,278,355,177.60
  5. Step 5: Solve for x
    x = 61,278,355,177.60/283,791.60
  6. Step 6: Final answer
    x = 215,927.30

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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.