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Finding the Fourth Proportional to 272,201.28, 408,322.56 and 72,520.96

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Solution

The fourth proportional to 272,201.28, 408,322.56 and 72,520.96 is: 108,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,201.28 : 408,322.56 = 72,520.96 : x
  2. Step 2: Convert to fraction form
    272,201.28/408,322.56 = 72,520.96/x
  3. Step 3: Cross multiply
    272,201.28x = 408,322.56 × 72,520.96
  4. Step 4: Simplify right side
    272,201.28x = 29,611,944,040.86
  5. Step 5: Solve for x
    x = 29,611,944,040.86/272,201.28
  6. Step 6: Final answer
    x = 108,786.94

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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.