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Finding the Fourth Proportional to 221,512.20, 332,268.30 and 137,531.40

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Solution

The fourth proportional to 221,512.20, 332,268.30 and 137,531.40 is: 206,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,512.20 : 332,268.30 = 137,531.40 : x
  2. Step 2: Convert to fraction form
    221,512.20/332,268.30 = 137,531.40/x
  3. Step 3: Cross multiply
    221,512.20x = 332,268.30 × 137,531.40
  4. Step 4: Simplify right side
    221,512.20x = 45,697,324,474.62
  5. Step 5: Solve for x
    x = 45,697,324,474.62/221,512.20
  6. Step 6: Final answer
    x = 206,297.10

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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.