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Finding the Fourth Proportional to 221,796.57, 332,826.62 and 81,653.61

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Solution

The fourth proportional to 221,796.57, 332,826.62 and 81,653.61 is: 122,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,796.57 : 332,826.62 = 81,653.61 : x
  2. Step 2: Convert to fraction form
    221,796.57/332,826.62 = 81,653.61/x
  3. Step 3: Cross multiply
    221,796.57x = 332,826.62 × 81,653.61
  4. Step 4: Simplify right side
    221,796.57x = 27,176,495,027.10
  5. Step 5: Solve for x
    x = 27,176,495,027.10/221,796.57
  6. Step 6: Final answer
    x = 122,528.92

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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.