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Finding the Fourth Proportional to 256,786.20, 385,150.14 and 99,001.44

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Solution

The fourth proportional to 256,786.20, 385,150.14 and 99,001.44 is: 148,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,786.20 : 385,150.14 = 99,001.44 : x
  2. Step 2: Convert to fraction form
    256,786.20/385,150.14 = 99,001.44/x
  3. Step 3: Cross multiply
    256,786.20x = 385,150.14 × 99,001.44
  4. Step 4: Simplify right side
    256,786.20x = 38,130,418,476.20
  5. Step 5: Solve for x
    x = 38,130,418,476.20/256,786.20
  6. Step 6: Final answer
    x = 148,490.92

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