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Finding the Fourth Proportional to 219,747.20, 329,620.80 and 217,414.40

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Solution

The fourth proportional to 219,747.20, 329,620.80 and 217,414.40 is: 326,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,747.20 : 329,620.80 = 217,414.40 : x
  2. Step 2: Convert to fraction form
    219,747.20/329,620.80 = 217,414.40/x
  3. Step 3: Cross multiply
    219,747.20x = 329,620.80 × 217,414.40
  4. Step 4: Simplify right side
    219,747.20x = 71,664,308,459.52
  5. Step 5: Solve for x
    x = 71,664,308,459.52/219,747.20
  6. Step 6: Final answer
    x = 326,121.60

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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.