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Finding the Fourth Proportional to 221,347.67, 331,824.24 and 81,073.49

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Solution

The fourth proportional to 221,347.67, 331,824.24 and 81,073.49 is: 121,537.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,347.67 : 331,824.24 = 81,073.49 : x
  2. Step 2: Convert to fraction form
    221,347.67/331,824.24 = 81,073.49/x
  3. Step 3: Cross multiply
    221,347.67x = 331,824.24 × 81,073.49
  4. Step 4: Simplify right side
    221,347.67x = 26,902,147,544.28
  5. Step 5: Solve for x
    x = 26,902,147,544.28/221,347.67
  6. Step 6: Final answer
    x = 121,537.98

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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.