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Finding the Fourth Proportional to 258,717.85, 357,079.89 and 145,540.60

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Solution

The fourth proportional to 258,717.85, 357,079.89 and 145,540.60 is: 200,873.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,717.85 : 357,079.89 = 145,540.60 : x
  2. Step 2: Convert to fraction form
    258,717.85/357,079.89 = 145,540.60/x
  3. Step 3: Cross multiply
    258,717.85x = 357,079.89 × 145,540.60
  4. Step 4: Simplify right side
    258,717.85x = 51,969,621,091.61
  5. Step 5: Solve for x
    x = 51,969,621,091.61/258,717.85
  6. Step 6: Final answer
    x = 200,873.74

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