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Finding the Fourth Proportional to 239,843.80, 360,057.30 and 121,454.20

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Solution

The fourth proportional to 239,843.80, 360,057.30 and 121,454.20 is: 182,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,843.80 : 360,057.30 = 121,454.20 : x
  2. Step 2: Convert to fraction form
    239,843.80/360,057.30 = 121,454.20/x
  3. Step 3: Cross multiply
    239,843.80x = 360,057.30 × 121,454.20
  4. Step 4: Simplify right side
    239,843.80x = 43,730,471,325.66
  5. Step 5: Solve for x
    x = 43,730,471,325.66/239,843.80
  6. Step 6: Final answer
    x = 182,328.96

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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.