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Finding the Fourth Proportional to 221,708.40, 332,562.60 and 81,567.60

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Solution

The fourth proportional to 221,708.40, 332,562.60 and 81,567.60 is: 122,351.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,708.40 : 332,562.60 = 81,567.60 : x
  2. Step 2: Convert to fraction form
    221,708.40/332,562.60 = 81,567.60/x
  3. Step 3: Cross multiply
    221,708.40x = 332,562.60 × 81,567.60
  4. Step 4: Simplify right side
    221,708.40x = 27,126,333,131.76
  5. Step 5: Solve for x
    x = 27,126,333,131.76/221,708.40
  6. Step 6: Final answer
    x = 122,351.40

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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.