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Finding the Fourth Proportional to 219,369.28, 329,053.92 and 79,127.88

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Solution

The fourth proportional to 219,369.28, 329,053.92 and 79,127.88 is: 118,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,369.28 : 329,053.92 = 79,127.88 : x
  2. Step 2: Convert to fraction form
    219,369.28/329,053.92 = 79,127.88/x
  3. Step 3: Cross multiply
    219,369.28x = 329,053.92 × 79,127.88
  4. Step 4: Simplify right side
    219,369.28x = 26,037,339,095.29
  5. Step 5: Solve for x
    x = 26,037,339,095.29/219,369.28
  6. Step 6: Final answer
    x = 118,691.82

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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.