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Finding the Fourth Proportional to 219,362.87, 329,042.78 and 61,591.47

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Solution

The fourth proportional to 219,362.87, 329,042.78 and 61,591.47 is: 92,386.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,362.87 : 329,042.78 = 61,591.47 : x
  2. Step 2: Convert to fraction form
    219,362.87/329,042.78 = 61,591.47/x
  3. Step 3: Cross multiply
    219,362.87x = 329,042.78 × 61,591.47
  4. Step 4: Simplify right side
    219,362.87x = 20,266,228,205.13
  5. Step 5: Solve for x
    x = 20,266,228,205.13/219,362.87
  6. Step 6: Final answer
    x = 92,386.78

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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.