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Finding the Fourth Proportional to 272,938.80, 408,947.40 and 179,396.40

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Solution

The fourth proportional to 272,938.80, 408,947.40 and 179,396.40 is: 268,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,938.80 : 408,947.40 = 179,396.40 : x
  2. Step 2: Convert to fraction form
    272,938.80/408,947.40 = 179,396.40/x
  3. Step 3: Cross multiply
    272,938.80x = 408,947.40 × 179,396.40
  4. Step 4: Simplify right side
    272,938.80x = 73,363,691,349.36
  5. Step 5: Solve for x
    x = 73,363,691,349.36/272,938.80
  6. Step 6: Final answer
    x = 268,791.73

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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.