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Finding the Fourth Proportional to 438,839.70, 658,282.36 and 139,343.75

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Solution

The fourth proportional to 438,839.70, 658,282.36 and 139,343.75 is: 209,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,839.70 : 658,282.36 = 139,343.75 : x
  2. Step 2: Convert to fraction form
    438,839.70/658,282.36 = 139,343.75/x
  3. Step 3: Cross multiply
    438,839.70x = 658,282.36 × 139,343.75
  4. Step 4: Simplify right side
    438,839.70x = 91,727,532,601.25
  5. Step 5: Solve for x
    x = 91,727,532,601.25/438,839.70
  6. Step 6: Final answer
    x = 209,022.87

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