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Finding the Fourth Proportional to 361,280.39, 541,996.65 and 136,635.80

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Solution

The fourth proportional to 361,280.39, 541,996.65 and 136,635.80 is: 204,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,280.39 : 541,996.65 = 136,635.80 : x
  2. Step 2: Convert to fraction form
    361,280.39/541,996.65 = 136,635.80/x
  3. Step 3: Cross multiply
    361,280.39x = 541,996.65 × 136,635.80
  4. Step 4: Simplify right side
    361,280.39x = 74,056,143,160.09
  5. Step 5: Solve for x
    x = 74,056,143,160.09/361,280.39
  6. Step 6: Final answer
    x = 204,982.46

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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.