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Finding the Fourth Proportional to 487,288.85, 730,849.43 and 132,331.46

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Solution

The fourth proportional to 487,288.85, 730,849.43 and 132,331.46 is: 198,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,288.85 : 730,849.43 = 132,331.46 : x
  2. Step 2: Convert to fraction form
    487,288.85/730,849.43 = 132,331.46/x
  3. Step 3: Cross multiply
    487,288.85x = 730,849.43 × 132,331.46
  4. Step 4: Simplify right side
    487,288.85x = 96,714,368,788.65
  5. Step 5: Solve for x
    x = 96,714,368,788.65/487,288.85
  6. Step 6: Final answer
    x = 198,474.42

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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.