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Finding the Fourth Proportional to 361,489.80, 541,845.90 and 136,763.40

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Solution

The fourth proportional to 361,489.80, 541,845.90 and 136,763.40 is: 204,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,489.80 : 541,845.90 = 136,763.40 : x
  2. Step 2: Convert to fraction form
    361,489.80/541,845.90 = 136,763.40/x
  3. Step 3: Cross multiply
    361,489.80x = 541,845.90 × 136,763.40
  4. Step 4: Simplify right side
    361,489.80x = 74,104,687,560.06
  5. Step 5: Solve for x
    x = 74,104,687,560.06/361,489.80
  6. Step 6: Final answer
    x = 204,998.00

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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.