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Finding the Fourth Proportional to 323,822.40, 485,296.20 and 216,902.40

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Solution

The fourth proportional to 323,822.40, 485,296.20 and 216,902.40 is: 325,060.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,822.40 : 485,296.20 = 216,902.40 : x
  2. Step 2: Convert to fraction form
    323,822.40/485,296.20 = 216,902.40/x
  3. Step 3: Cross multiply
    323,822.40x = 485,296.20 × 216,902.40
  4. Step 4: Simplify right side
    323,822.40x = 105,261,910,490.88
  5. Step 5: Solve for x
    x = 105,261,910,490.88/323,822.40
  6. Step 6: Final answer
    x = 325,060.62

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