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Finding the Fourth Proportional to 221,896.44, 306,217.13 and 119,921.57

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Solution

The fourth proportional to 221,896.44, 306,217.13 and 119,921.57 is: 165,491.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,896.44 : 306,217.13 = 119,921.57 : x
  2. Step 2: Convert to fraction form
    221,896.44/306,217.13 = 119,921.57/x
  3. Step 3: Cross multiply
    221,896.44x = 306,217.13 × 119,921.57
  4. Step 4: Simplify right side
    221,896.44x = 36,722,036,859.80
  5. Step 5: Solve for x
    x = 36,722,036,859.80/221,896.44
  6. Step 6: Final answer
    x = 165,491.78

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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.