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Finding the Fourth Proportional to 219,791.24, 329,686.86 and 79,517.24

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Solution

The fourth proportional to 219,791.24, 329,686.86 and 79,517.24 is: 119,275.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,791.24 : 329,686.86 = 79,517.24 : x
  2. Step 2: Convert to fraction form
    219,791.24/329,686.86 = 79,517.24/x
  3. Step 3: Cross multiply
    219,791.24x = 329,686.86 × 79,517.24
  4. Step 4: Simplify right side
    219,791.24x = 26,215,789,171.47
  5. Step 5: Solve for x
    x = 26,215,789,171.47/219,791.24
  6. Step 6: Final answer
    x = 119,275.86

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1.5x scale

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.