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Finding the Fourth Proportional to 221,906.44, 332,826.84 and 81,632.26

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Solution

The fourth proportional to 221,906.44, 332,826.84 and 81,632.26 is: 122,436.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,906.44 : 332,826.84 = 81,632.26 : x
  2. Step 2: Convert to fraction form
    221,906.44/332,826.84 = 81,632.26/x
  3. Step 3: Cross multiply
    221,906.44x = 332,826.84 × 81,632.26
  4. Step 4: Simplify right side
    221,906.44x = 27,169,407,137.86
  5. Step 5: Solve for x
    x = 27,169,407,137.86/221,906.44
  6. Step 6: Final answer
    x = 122,436.32

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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.