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Finding the Fourth Proportional to 239,279.20, 330,219.80 and 131,849.11

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Solution

The fourth proportional to 239,279.20, 330,219.80 and 131,849.11 is: 181,959.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,279.20 : 330,219.80 = 131,849.11 : x
  2. Step 2: Convert to fraction form
    239,279.20/330,219.80 = 131,849.11/x
  3. Step 3: Cross multiply
    239,279.20x = 330,219.80 × 131,849.11
  4. Step 4: Simplify right side
    239,279.20x = 43,539,186,734.38
  5. Step 5: Solve for x
    x = 43,539,186,734.38/239,279.20
  6. Step 6: Final answer
    x = 181,959.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.