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Finding the Fourth Proportional to 220,826.64, 331,295.16 and 87,662.88

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Solution

The fourth proportional to 220,826.64, 331,295.16 and 87,662.88 is: 131,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,826.64 : 331,295.16 = 87,662.88 : x
  2. Step 2: Convert to fraction form
    220,826.64/331,295.16 = 87,662.88/x
  3. Step 3: Cross multiply
    220,826.64x = 331,295.16 × 87,662.88
  4. Step 4: Simplify right side
    220,826.64x = 29,042,287,855.66
  5. Step 5: Solve for x
    x = 29,042,287,855.66/220,826.64
  6. Step 6: Final answer
    x = 131,516.23

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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.