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Finding the Fourth Proportional to 272,356.80, 408,049.20 and 131,805.60

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Solution

The fourth proportional to 272,356.80, 408,049.20 and 131,805.60 is: 197,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,356.80 : 408,049.20 = 131,805.60 : x
  2. Step 2: Convert to fraction form
    272,356.80/408,049.20 = 131,805.60/x
  3. Step 3: Cross multiply
    272,356.80x = 408,049.20 × 131,805.60
  4. Step 4: Simplify right side
    272,356.80x = 53,783,169,635.52
  5. Step 5: Solve for x
    x = 53,783,169,635.52/272,356.80
  6. Step 6: Final answer
    x = 197,473.20

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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.