Home / 398,705.14-597,743.79-198,922.78

Finding the Fourth Proportional to 398,705.14, 597,743.79 and 198,922.78

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Solution

The fourth proportional to 398,705.14, 597,743.79 and 198,922.78 is: 298,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,705.14 : 597,743.79 = 198,922.78 : x
  2. Step 2: Convert to fraction form
    398,705.14/597,743.79 = 198,922.78/x
  3. Step 3: Cross multiply
    398,705.14x = 597,743.79 × 198,922.78
  4. Step 4: Simplify right side
    398,705.14x = 118,904,856,434.54
  5. Step 5: Solve for x
    x = 118,904,856,434.54/398,705.14
  6. Step 6: Final answer
    x = 298,227.55

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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.