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Finding the Fourth Proportional to 221,687.97, 332,664.44 and 81,460.77

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Solution

The fourth proportional to 221,687.97, 332,664.44 and 81,460.77 is: 122,239.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,687.97 : 332,664.44 = 81,460.77 : x
  2. Step 2: Convert to fraction form
    221,687.97/332,664.44 = 81,460.77/x
  3. Step 3: Cross multiply
    221,687.97x = 332,664.44 × 81,460.77
  4. Step 4: Simplify right side
    221,687.97x = 27,099,101,026.72
  5. Step 5: Solve for x
    x = 27,099,101,026.72/221,687.97
  6. Step 6: Final answer
    x = 122,239.84

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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.