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Finding the Fourth Proportional to 198,939, 298,532.88 and 80,610.96

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Solution

The fourth proportional to 198,939, 298,532.88 and 80,610.96 is: 120,966.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,939 : 298,532.88 = 80,610.96 : x
  2. Step 2: Convert to fraction form
    198,939/298,532.88 = 80,610.96/x
  3. Step 3: Cross multiply
    198,939x = 298,532.88 × 80,610.96
  4. Step 4: Simplify right side
    198,939x = 24,065,022,048.36
  5. Step 5: Solve for x
    x = 24,065,022,048.36/198,939
  6. Step 6: Final answer
    x = 120,966.84

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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.