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Finding the Fourth Proportional to 219,951.12, 329,926.56 and 79,709.52

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Solution

The fourth proportional to 219,951.12, 329,926.56 and 79,709.52 is: 119,564.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,951.12 : 329,926.56 = 79,709.52 : x
  2. Step 2: Convert to fraction form
    219,951.12/329,926.56 = 79,709.52/x
  3. Step 3: Cross multiply
    219,951.12x = 329,926.56 × 79,709.52
  4. Step 4: Simplify right side
    219,951.12x = 26,298,287,732.85
  5. Step 5: Solve for x
    x = 26,298,287,732.85/219,951.12
  6. Step 6: Final answer
    x = 119,564.24

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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.