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Finding the Fourth Proportional to 220,992.40, 331,488.60 and 80,851.60

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Solution

The fourth proportional to 220,992.40, 331,488.60 and 80,851.60 is: 121,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,992.40 : 331,488.60 = 80,851.60 : x
  2. Step 2: Convert to fraction form
    220,992.40/331,488.60 = 80,851.60/x
  3. Step 3: Cross multiply
    220,992.40x = 331,488.60 × 80,851.60
  4. Step 4: Simplify right side
    220,992.40x = 26,801,383,691.76
  5. Step 5: Solve for x
    x = 26,801,383,691.76/220,992.40
  6. Step 6: Final answer
    x = 121,277.40

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1.5x scale

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.