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Finding the Fourth Proportional to 239,906.80, 360,151.80 and 121,517.20

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Solution

The fourth proportional to 239,906.80, 360,151.80 and 121,517.20 is: 182,423.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,906.80 : 360,151.80 = 121,517.20 : x
  2. Step 2: Convert to fraction form
    239,906.80/360,151.80 = 121,517.20/x
  3. Step 3: Cross multiply
    239,906.80x = 360,151.80 × 121,517.20
  4. Step 4: Simplify right side
    239,906.80x = 43,764,638,310.96
  5. Step 5: Solve for x
    x = 43,764,638,310.96/239,906.80
  6. Step 6: Final answer
    x = 182,423.50

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1.5x scale

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.