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Finding the Fourth Proportional to 198,979.20, 298,123.20 and 167,875.20

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Solution

The fourth proportional to 198,979.20, 298,123.20 and 167,875.20 is: 251,521.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,979.20 : 298,123.20 = 167,875.20 : x
  2. Step 2: Convert to fraction form
    198,979.20/298,123.20 = 167,875.20/x
  3. Step 3: Cross multiply
    198,979.20x = 298,123.20 × 167,875.20
  4. Step 4: Simplify right side
    198,979.20x = 50,047,491,824.64
  5. Step 5: Solve for x
    x = 50,047,491,824.64/198,979.20
  6. Step 6: Final answer
    x = 251,521.22

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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.