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Finding the Fourth Proportional to 218,182.60, 327,209.10 and 84,986.20

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Solution

The fourth proportional to 218,182.60, 327,209.10 and 84,986.20 is: 127,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,182.60 : 327,209.10 = 84,986.20 : x
  2. Step 2: Convert to fraction form
    218,182.60/327,209.10 = 84,986.20/x
  3. Step 3: Cross multiply
    218,182.60x = 327,209.10 × 84,986.20
  4. Step 4: Simplify right side
    218,182.60x = 27,808,258,014.42
  5. Step 5: Solve for x
    x = 27,808,258,014.42/218,182.60
  6. Step 6: Final answer
    x = 127,454.06

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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.