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Finding the Fourth Proportional to 219,500.80, 329,251.20 and 196,691.20

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Solution

The fourth proportional to 219,500.80, 329,251.20 and 196,691.20 is: 295,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,500.80 : 329,251.20 = 196,691.20 : x
  2. Step 2: Convert to fraction form
    219,500.80/329,251.20 = 196,691.20/x
  3. Step 3: Cross multiply
    219,500.80x = 329,251.20 × 196,691.20
  4. Step 4: Simplify right side
    219,500.80x = 64,760,813,629.44
  5. Step 5: Solve for x
    x = 64,760,813,629.44/219,500.80
  6. Step 6: Final answer
    x = 295,036.80

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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.