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Finding the Fourth Proportional to 388,538.40, 582,822 and 135,769.44

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Solution

The fourth proportional to 388,538.40, 582,822 and 135,769.44 is: 203,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,538.40 : 582,822 = 135,769.44 : x
  2. Step 2: Convert to fraction form
    388,538.40/582,822 = 135,769.44/x
  3. Step 3: Cross multiply
    388,538.40x = 582,822 × 135,769.44
  4. Step 4: Simplify right side
    388,538.40x = 79,129,416,559.68
  5. Step 5: Solve for x
    x = 79,129,416,559.68/388,538.40
  6. Step 6: Final answer
    x = 203,659.19

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