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Finding the Fourth Proportional to 218,719.20, 328,078.80 and 125,234.40

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Solution

The fourth proportional to 218,719.20, 328,078.80 and 125,234.40 is: 187,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,719.20 : 328,078.80 = 125,234.40 : x
  2. Step 2: Convert to fraction form
    218,719.20/328,078.80 = 125,234.40/x
  3. Step 3: Cross multiply
    218,719.20x = 328,078.80 × 125,234.40
  4. Step 4: Simplify right side
    218,719.20x = 41,086,751,670.72
  5. Step 5: Solve for x
    x = 41,086,751,670.72/218,719.20
  6. Step 6: Final answer
    x = 187,851.60

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