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Finding the Fourth Proportional to 221,969.70, 332,954.55 and 81,710.10

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Solution

The fourth proportional to 221,969.70, 332,954.55 and 81,710.10 is: 122,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,969.70 : 332,954.55 = 81,710.10 : x
  2. Step 2: Convert to fraction form
    221,969.70/332,954.55 = 81,710.10/x
  3. Step 3: Cross multiply
    221,969.70x = 332,954.55 × 81,710.10
  4. Step 4: Simplify right side
    221,969.70x = 27,205,749,575.96
  5. Step 5: Solve for x
    x = 27,205,749,575.96/221,969.70
  6. Step 6: Final answer
    x = 122,565.15

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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.