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Finding the Fourth Proportional to 221,901.93, 332,820.09 and 81,627.75

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Solution

The fourth proportional to 221,901.93, 332,820.09 and 81,627.75 is: 122,429.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,901.93 : 332,820.09 = 81,627.75 : x
  2. Step 2: Convert to fraction form
    221,901.93/332,820.09 = 81,627.75/x
  3. Step 3: Cross multiply
    221,901.93x = 332,820.09 × 81,627.75
  4. Step 4: Simplify right side
    221,901.93x = 27,167,355,101.50
  5. Step 5: Solve for x
    x = 27,167,355,101.50/221,901.93
  6. Step 6: Final answer
    x = 122,429.56

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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.