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Finding the Fourth Proportional to 272,086.68, 408,129.36 and 72,407.04

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Solution

The fourth proportional to 272,086.68, 408,129.36 and 72,407.04 is: 108,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,086.68 : 408,129.36 = 72,407.04 : x
  2. Step 2: Convert to fraction form
    272,086.68/408,129.36 = 72,407.04/x
  3. Step 3: Cross multiply
    272,086.68x = 408,129.36 × 72,407.04
  4. Step 4: Simplify right side
    272,086.68x = 29,551,438,894.69
  5. Step 5: Solve for x
    x = 29,551,438,894.69/272,086.68
  6. Step 6: Final answer
    x = 108,610.38

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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.