Home / 218,403.27-327,654.05-85,321.49

Finding the Fourth Proportional to 218,403.27, 327,654.05 and 85,321.49

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Solution

The fourth proportional to 218,403.27, 327,654.05 and 85,321.49 is: 128,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,403.27 : 327,654.05 = 85,321.49 : x
  2. Step 2: Convert to fraction form
    218,403.27/327,654.05 = 85,321.49/x
  3. Step 3: Cross multiply
    218,403.27x = 327,654.05 × 85,321.49
  4. Step 4: Simplify right side
    218,403.27x = 27,955,929,685.66
  5. Step 5: Solve for x
    x = 27,955,929,685.66/218,403.27
  6. Step 6: Final answer
    x = 128,001.42

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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.