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Finding the Fourth Proportional to 219,179.97, 328,766.31 and 69,419.97

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Solution

The fourth proportional to 219,179.97, 328,766.31 and 69,419.97 is: 104,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,179.97 : 328,766.31 = 69,419.97 : x
  2. Step 2: Convert to fraction form
    219,179.97/328,766.31 = 69,419.97/x
  3. Step 3: Cross multiply
    219,179.97x = 328,766.31 × 69,419.97
  4. Step 4: Simplify right side
    219,179.97x = 22,822,947,377.21
  5. Step 5: Solve for x
    x = 22,822,947,377.21/219,179.97
  6. Step 6: Final answer
    x = 104,128.80

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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.