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Finding the Fourth Proportional to 272,171.68, 408,265.20 and 75,179.68

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Solution

The fourth proportional to 272,171.68, 408,265.20 and 75,179.68 is: 112,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,171.68 : 408,265.20 = 75,179.68 : x
  2. Step 2: Convert to fraction form
    272,171.68/408,265.20 = 75,179.68/x
  3. Step 3: Cross multiply
    272,171.68x = 408,265.20 × 75,179.68
  4. Step 4: Simplify right side
    272,171.68x = 30,693,247,091.14
  5. Step 5: Solve for x
    x = 30,693,247,091.14/272,171.68
  6. Step 6: Final answer
    x = 112,771.64

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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.