Home / 218,023.17-327,081.91-66,207.78

Finding the Fourth Proportional to 218,023.17, 327,081.91 and 66,207.78

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Solution

The fourth proportional to 218,023.17, 327,081.91 and 66,207.78 is: 99,325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,023.17 : 327,081.91 = 66,207.78 : x
  2. Step 2: Convert to fraction form
    218,023.17/327,081.91 = 66,207.78/x
  3. Step 3: Cross multiply
    218,023.17x = 327,081.91 × 66,207.78
  4. Step 4: Simplify right side
    218,023.17x = 21,655,365,503.85
  5. Step 5: Solve for x
    x = 21,655,365,503.85/218,023.17
  6. Step 6: Final answer
    x = 99,325.98

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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.