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Finding the Fourth Proportional to 361,412.30, 541,729.65 and 136,685.90

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Solution

The fourth proportional to 361,412.30, 541,729.65 and 136,685.90 is: 204,881.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,412.30 : 541,729.65 = 136,685.90 : x
  2. Step 2: Convert to fraction form
    361,412.30/541,729.65 = 136,685.90/x
  3. Step 3: Cross multiply
    361,412.30x = 541,729.65 × 136,685.90
  4. Step 4: Simplify right side
    361,412.30x = 74,046,804,766.94
  5. Step 5: Solve for x
    x = 74,046,804,766.94/361,412.30
  6. Step 6: Final answer
    x = 204,881.81

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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.