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Finding the Fourth Proportional to 259,361.60, 389,042.40 and 72,372.80

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Solution

The fourth proportional to 259,361.60, 389,042.40 and 72,372.80 is: 108,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,361.60 : 389,042.40 = 72,372.80 : x
  2. Step 2: Convert to fraction form
    259,361.60/389,042.40 = 72,372.80/x
  3. Step 3: Cross multiply
    259,361.60x = 389,042.40 × 72,372.80
  4. Step 4: Simplify right side
    259,361.60x = 28,156,087,806.72
  5. Step 5: Solve for x
    x = 28,156,087,806.72/259,361.60
  6. Step 6: Final answer
    x = 108,559.20

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