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Finding the Fourth Proportional to 218,218.52, 327,182.78 and 85,111.22

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Solution

The fourth proportional to 218,218.52, 327,182.78 and 85,111.22 is: 127,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,218.52 : 327,182.78 = 85,111.22 : x
  2. Step 2: Convert to fraction form
    218,218.52/327,182.78 = 85,111.22/x
  3. Step 3: Cross multiply
    218,218.52x = 327,182.78 × 85,111.22
  4. Step 4: Simplify right side
    218,218.52x = 27,846,925,568.79
  5. Step 5: Solve for x
    x = 27,846,925,568.79/218,218.52
  6. Step 6: Final answer
    x = 127,610.28

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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.