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Finding the Fourth Proportional to 299,446.64, 449,192.12 and 86,205.92

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Solution

The fourth proportional to 299,446.64, 449,192.12 and 86,205.92 is: 129,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,446.64 : 449,192.12 = 86,205.92 : x
  2. Step 2: Convert to fraction form
    299,446.64/449,192.12 = 86,205.92/x
  3. Step 3: Cross multiply
    299,446.64x = 449,192.12 × 86,205.92
  4. Step 4: Simplify right side
    299,446.64x = 38,723,019,961.35
  5. Step 5: Solve for x
    x = 38,723,019,961.35/299,446.64
  6. Step 6: Final answer
    x = 129,315.26

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