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Finding the Fourth Proportional to 198,550.80, 297,881.80 and 80,305.20

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Solution

The fourth proportional to 198,550.80, 297,881.80 and 80,305.20 is: 120,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,550.80 : 297,881.80 = 80,305.20 : x
  2. Step 2: Convert to fraction form
    198,550.80/297,881.80 = 80,305.20/x
  3. Step 3: Cross multiply
    198,550.80x = 297,881.80 × 80,305.20
  4. Step 4: Simplify right side
    198,550.80x = 23,921,457,525.36
  5. Step 5: Solve for x
    x = 23,921,457,525.36/198,550.80
  6. Step 6: Final answer
    x = 120,480.29

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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.