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Finding the Fourth Proportional to 221,217.48, 331,826.04 and 55,005.48

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Solution

The fourth proportional to 221,217.48, 331,826.04 and 55,005.48 is: 82,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,217.48 : 331,826.04 = 55,005.48 : x
  2. Step 2: Convert to fraction form
    221,217.48/331,826.04 = 55,005.48/x
  3. Step 3: Cross multiply
    221,217.48x = 331,826.04 × 55,005.48
  4. Step 4: Simplify right side
    221,217.48x = 18,252,250,606.70
  5. Step 5: Solve for x
    x = 18,252,250,606.70/221,217.48
  6. Step 6: Final answer
    x = 82,508.18

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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.