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Finding the Fourth Proportional to 221,969.94, 332,921.97 and 81,695.76

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Solution

The fourth proportional to 221,969.94, 332,921.97 and 81,695.76 is: 122,531.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,969.94 : 332,921.97 = 81,695.76 : x
  2. Step 2: Convert to fraction form
    221,969.94/332,921.97 = 81,695.76/x
  3. Step 3: Cross multiply
    221,969.94x = 332,921.97 × 81,695.76
  4. Step 4: Simplify right side
    221,969.94x = 27,198,313,359.85
  5. Step 5: Solve for x
    x = 27,198,313,359.85/221,969.94
  6. Step 6: Final answer
    x = 122,531.52

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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.