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Finding the Fourth Proportional to 299,478.80, 449,225.40 and 89,123.60

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Solution

The fourth proportional to 299,478.80, 449,225.40 and 89,123.60 is: 133,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,478.80 : 449,225.40 = 89,123.60 : x
  2. Step 2: Convert to fraction form
    299,478.80/449,225.40 = 89,123.60/x
  3. Step 3: Cross multiply
    299,478.80x = 449,225.40 × 89,123.60
  4. Step 4: Simplify right side
    299,478.80x = 40,036,584,859.44
  5. Step 5: Solve for x
    x = 40,036,584,859.44/299,478.80
  6. Step 6: Final answer
    x = 133,687.54

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