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Finding the Fourth Proportional to 664,475.20, 996,858.60 and 215,119.60

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Solution

The fourth proportional to 664,475.20, 996,858.60 and 215,119.60 is: 322,726.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,475.20 : 996,858.60 = 215,119.60 : x
  2. Step 2: Convert to fraction form
    664,475.20/996,858.60 = 215,119.60/x
  3. Step 3: Cross multiply
    664,475.20x = 996,858.60 × 215,119.60
  4. Step 4: Simplify right side
    664,475.20x = 214,443,823,288.56
  5. Step 5: Solve for x
    x = 214,443,823,288.56/664,475.20
  6. Step 6: Final answer
    x = 322,726.60

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