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Finding the Fourth Proportional to 219,521.67, 329,046.28 and 143,591.61

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Solution

The fourth proportional to 219,521.67, 329,046.28 and 143,591.61 is: 215,232.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,521.67 : 329,046.28 = 143,591.61 : x
  2. Step 2: Convert to fraction form
    219,521.67/329,046.28 = 143,591.61/x
  3. Step 3: Cross multiply
    219,521.67x = 329,046.28 × 143,591.61
  4. Step 4: Simplify right side
    219,521.67x = 47,248,285,109.71
  5. Step 5: Solve for x
    x = 47,248,285,109.71/219,521.67
  6. Step 6: Final answer
    x = 215,232.90

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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.