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Finding the Fourth Proportional to 221,622.32, 305,860.92 and 132,198.32

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Solution

The fourth proportional to 221,622.32, 305,860.92 and 132,198.32 is: 182,446.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,622.32 : 305,860.92 = 132,198.32 : x
  2. Step 2: Convert to fraction form
    221,622.32/305,860.92 = 132,198.32/x
  3. Step 3: Cross multiply
    221,622.32x = 305,860.92 × 132,198.32
  4. Step 4: Simplify right side
    221,622.32x = 40,434,299,777.65
  5. Step 5: Solve for x
    x = 40,434,299,777.65/221,622.32
  6. Step 6: Final answer
    x = 182,446.88

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1.5x scale

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.