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Finding the Fourth Proportional to 299,640.20, 449,978.70 and 194,923.40

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Solution

The fourth proportional to 299,640.20, 449,978.70 and 194,923.40 is: 292,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,640.20 : 449,978.70 = 194,923.40 : x
  2. Step 2: Convert to fraction form
    299,640.20/449,978.70 = 194,923.40/x
  3. Step 3: Cross multiply
    299,640.20x = 449,978.70 × 194,923.40
  4. Step 4: Simplify right side
    299,640.20x = 87,711,378,131.58
  5. Step 5: Solve for x
    x = 87,711,378,131.58/299,640.20
  6. Step 6: Final answer
    x = 292,722.33

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