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Finding the Fourth Proportional to 198,439.63, 297,635.87 and 65,286.87

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Solution

The fourth proportional to 198,439.63, 297,635.87 and 65,286.87 is: 97,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,439.63 : 297,635.87 = 65,286.87 : x
  2. Step 2: Convert to fraction form
    198,439.63/297,635.87 = 65,286.87/x
  3. Step 3: Cross multiply
    198,439.63x = 297,635.87 × 65,286.87
  4. Step 4: Simplify right side
    198,439.63x = 19,431,714,025.59
  5. Step 5: Solve for x
    x = 19,431,714,025.59/198,439.63
  6. Step 6: Final answer
    x = 97,922.55

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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.