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Finding the Fourth Proportional to 198,679.52, 298,080.81 and 68,859.41

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Solution

The fourth proportional to 198,679.52, 298,080.81 and 68,859.41 is: 103,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,679.52 : 298,080.81 = 68,859.41 : x
  2. Step 2: Convert to fraction form
    198,679.52/298,080.81 = 68,859.41/x
  3. Step 3: Cross multiply
    198,679.52x = 298,080.81 × 68,859.41
  4. Step 4: Simplify right side
    198,679.52x = 20,525,667,218.52
  5. Step 5: Solve for x
    x = 20,525,667,218.52/198,679.52
  6. Step 6: Final answer
    x = 103,310.43

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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.