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Finding the Fourth Proportional to 543,247.20, 814,947.60 and 169,231.20

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Solution

The fourth proportional to 543,247.20, 814,947.60 and 169,231.20 is: 253,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,247.20 : 814,947.60 = 169,231.20 : x
  2. Step 2: Convert to fraction form
    543,247.20/814,947.60 = 169,231.20/x
  3. Step 3: Cross multiply
    543,247.20x = 814,947.60 × 169,231.20
  4. Step 4: Simplify right side
    543,247.20x = 137,914,560,285.12
  5. Step 5: Solve for x
    x = 137,914,560,285.12/543,247.20
  6. Step 6: Final answer
    x = 253,870.72

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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.