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Finding the Fourth Proportional to 262,520.20, 393,326.70 and 121,990.60

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Solution

The fourth proportional to 262,520.20, 393,326.70 and 121,990.60 is: 182,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,520.20 : 393,326.70 = 121,990.60 : x
  2. Step 2: Convert to fraction form
    262,520.20/393,326.70 = 121,990.60/x
  3. Step 3: Cross multiply
    262,520.20x = 393,326.70 × 121,990.60
  4. Step 4: Simplify right side
    262,520.20x = 47,982,160,129.02
  5. Step 5: Solve for x
    x = 47,982,160,129.02/262,520.20
  6. Step 6: Final answer
    x = 182,775.12

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