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Finding the Fourth Proportional to 398,842.52, 598,134.32 and 132,531.56

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Solution

The fourth proportional to 398,842.52, 598,134.32 and 132,531.56 is: 198,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,842.52 : 598,134.32 = 132,531.56 : x
  2. Step 2: Convert to fraction form
    398,842.52/598,134.32 = 132,531.56/x
  3. Step 3: Cross multiply
    398,842.52x = 598,134.32 × 132,531.56
  4. Step 4: Simplify right side
    398,842.52x = 79,271,671,859.80
  5. Step 5: Solve for x
    x = 79,271,671,859.80/398,842.52
  6. Step 6: Final answer
    x = 198,754.32

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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.