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Finding the Fourth Proportional to 317,329.92, 475,996.03 and 80,672.61

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Solution

The fourth proportional to 317,329.92, 475,996.03 and 80,672.61 is: 121,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,329.92 : 475,996.03 = 80,672.61 : x
  2. Step 2: Convert to fraction form
    317,329.92/475,996.03 = 80,672.61/x
  3. Step 3: Cross multiply
    317,329.92x = 475,996.03 × 80,672.61
  4. Step 4: Simplify right side
    317,329.92x = 38,399,840,995.56
  5. Step 5: Solve for x
    x = 38,399,840,995.56/317,329.92
  6. Step 6: Final answer
    x = 121,009.20

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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.