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Finding the Fourth Proportional to 221,951.48, 332,960.38 and 81,699.44

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Solution

The fourth proportional to 221,951.48, 332,960.38 and 81,699.44 is: 122,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,951.48 : 332,960.38 = 81,699.44 : x
  2. Step 2: Convert to fraction form
    221,951.48/332,960.38 = 81,699.44/x
  3. Step 3: Cross multiply
    221,951.48x = 332,960.38 × 81,699.44
  4. Step 4: Simplify right side
    221,951.48x = 27,202,676,588.19
  5. Step 5: Solve for x
    x = 27,202,676,588.19/221,951.48
  6. Step 6: Final answer
    x = 122,561.37

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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.