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Finding the Fourth Proportional to 198,863.64, 298,256.58 and 74,179.80

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Solution

The fourth proportional to 198,863.64, 298,256.58 and 74,179.80 is: 111,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,863.64 : 298,256.58 = 74,179.80 : x
  2. Step 2: Convert to fraction form
    198,863.64/298,256.58 = 74,179.80/x
  3. Step 3: Cross multiply
    198,863.64x = 298,256.58 × 74,179.80
  4. Step 4: Simplify right side
    198,863.64x = 22,124,613,453.08
  5. Step 5: Solve for x
    x = 22,124,613,453.08/198,863.64
  6. Step 6: Final answer
    x = 111,255.20

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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.