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Finding the Fourth Proportional to 218,023.67, 327,082.66 and 66,208.28

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Solution

The fourth proportional to 218,023.67, 327,082.66 and 66,208.28 is: 99,326.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,023.67 : 327,082.66 = 66,208.28 : x
  2. Step 2: Convert to fraction form
    218,023.67/327,082.66 = 66,208.28/x
  3. Step 3: Cross multiply
    218,023.67x = 327,082.66 × 66,208.28
  4. Step 4: Simplify right side
    218,023.67x = 21,655,578,701.01
  5. Step 5: Solve for x
    x = 21,655,578,701.01/218,023.67
  6. Step 6: Final answer
    x = 99,326.73

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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.