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Finding the Fourth Proportional to 247,384.13, 371,057.56 and 78,897.65

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Solution

The fourth proportional to 247,384.13, 371,057.56 and 78,897.65 is: 118,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,384.13 : 371,057.56 = 78,897.65 : x
  2. Step 2: Convert to fraction form
    247,384.13/371,057.56 = 78,897.65/x
  3. Step 3: Cross multiply
    247,384.13x = 371,057.56 × 78,897.65
  4. Step 4: Simplify right side
    247,384.13x = 29,275,567,446.20
  5. Step 5: Solve for x
    x = 29,275,567,446.20/247,384.13
  6. Step 6: Final answer
    x = 118,340.53

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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.