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Finding the Fourth Proportional to 218,416.68, 327,609.02 and 85,271.72

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Solution

The fourth proportional to 218,416.68, 327,609.02 and 85,271.72 is: 127,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,416.68 : 327,609.02 = 85,271.72 : x
  2. Step 2: Convert to fraction form
    218,416.68/327,609.02 = 85,271.72/x
  3. Step 3: Cross multiply
    218,416.68x = 327,609.02 × 85,271.72
  4. Step 4: Simplify right side
    218,416.68x = 27,935,784,622.91
  5. Step 5: Solve for x
    x = 27,935,784,622.91/218,416.68
  6. Step 6: Final answer
    x = 127,901.33

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