Home / 398,830.14-598,115.79-132,519.15

Finding the Fourth Proportional to 398,830.14, 598,115.79 and 132,519.15

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Solution

The fourth proportional to 398,830.14, 598,115.79 and 132,519.15 is: 198,735.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,830.14 : 598,115.79 = 132,519.15 : x
  2. Step 2: Convert to fraction form
    398,830.14/598,115.79 = 132,519.15/x
  3. Step 3: Cross multiply
    398,830.14x = 598,115.79 × 132,519.15
  4. Step 4: Simplify right side
    398,830.14x = 79,261,796,092.38
  5. Step 5: Solve for x
    x = 79,261,796,092.38/398,830.14
  6. Step 6: Final answer
    x = 198,735.72

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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.