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Finding the Fourth Proportional to 219,377.25, 329,065.92 and 79,135.86

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Solution

The fourth proportional to 219,377.25, 329,065.92 and 79,135.86 is: 118,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,377.25 : 329,065.92 = 79,135.86 : x
  2. Step 2: Convert to fraction form
    219,377.25/329,065.92 = 79,135.86/x
  3. Step 3: Cross multiply
    219,377.25x = 329,065.92 × 79,135.86
  4. Step 4: Simplify right side
    219,377.25x = 26,040,914,575.89
  5. Step 5: Solve for x
    x = 26,040,914,575.89/219,377.25
  6. Step 6: Final answer
    x = 118,703.81

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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.