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Finding the Fourth Proportional to 221,736.32, 332,735.72 and 81,593.36

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Solution

The fourth proportional to 221,736.32, 332,735.72 and 81,593.36 is: 122,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,736.32 : 332,735.72 = 81,593.36 : x
  2. Step 2: Convert to fraction form
    221,736.32/332,735.72 = 81,593.36/x
  3. Step 3: Cross multiply
    221,736.32x = 332,735.72 × 81,593.36
  4. Step 4: Simplify right side
    221,736.32x = 27,149,025,386.82
  5. Step 5: Solve for x
    x = 27,149,025,386.82/221,736.32
  6. Step 6: Final answer
    x = 122,438.33

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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.