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Finding the Fourth Proportional to 221,636.52, 332,454.80 and 55,424.52

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Solution

The fourth proportional to 221,636.52, 332,454.80 and 55,424.52 is: 83,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,636.52 : 332,454.80 = 55,424.52 : x
  2. Step 2: Convert to fraction form
    221,636.52/332,454.80 = 55,424.52/x
  3. Step 3: Cross multiply
    221,636.52x = 332,454.80 × 55,424.52
  4. Step 4: Simplify right side
    221,636.52x = 18,426,147,711.70
  5. Step 5: Solve for x
    x = 18,426,147,711.70/221,636.52
  6. Step 6: Final answer
    x = 83,136.79

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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.