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Finding the Fourth Proportional to 272,609.22, 408,882.51 and 72,945.30

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Solution

The fourth proportional to 272,609.22, 408,882.51 and 72,945.30 is: 109,409.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,609.22 : 408,882.51 = 72,945.30 : x
  2. Step 2: Convert to fraction form
    272,609.22/408,882.51 = 72,945.30/x
  3. Step 3: Cross multiply
    272,609.22x = 408,882.51 × 72,945.30
  4. Step 4: Simplify right side
    272,609.22x = 29,826,057,356.70
  5. Step 5: Solve for x
    x = 29,826,057,356.70/272,609.22
  6. Step 6: Final answer
    x = 109,409.57

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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.