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Finding the Fourth Proportional to 398,866.22, 598,169.48 and 132,555.24

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Solution

The fourth proportional to 398,866.22, 598,169.48 and 132,555.24 is: 198,789.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,866.22 : 598,169.48 = 132,555.24 : x
  2. Step 2: Convert to fraction form
    398,866.22/598,169.48 = 132,555.24/x
  3. Step 3: Cross multiply
    398,866.22x = 598,169.48 × 132,555.24
  4. Step 4: Simplify right side
    398,866.22x = 79,290,498,982.08
  5. Step 5: Solve for x
    x = 79,290,498,982.08/398,866.22
  6. Step 6: Final answer
    x = 198,789.71

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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.