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Finding the Fourth Proportional to 219,722, 329,387.52 and 79,449.44

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Solution

The fourth proportional to 219,722, 329,387.52 and 79,449.44 is: 119,103.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,722 : 329,387.52 = 79,449.44 : x
  2. Step 2: Convert to fraction form
    219,722/329,387.52 = 79,449.44/x
  3. Step 3: Cross multiply
    219,722x = 329,387.52 × 79,449.44
  4. Step 4: Simplify right side
    219,722x = 26,169,654,006.99
  5. Step 5: Solve for x
    x = 26,169,654,006.99/219,722
  6. Step 6: Final answer
    x = 119,103.48

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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.