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Finding the Fourth Proportional to 268,442.20, 402,317.70 and 205,802.20

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Solution

The fourth proportional to 268,442.20, 402,317.70 and 205,802.20 is: 308,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,442.20 : 402,317.70 = 205,802.20 : x
  2. Step 2: Convert to fraction form
    268,442.20/402,317.70 = 205,802.20/x
  3. Step 3: Cross multiply
    268,442.20x = 402,317.70 × 205,802.20
  4. Step 4: Simplify right side
    268,442.20x = 82,797,867,758.94
  5. Step 5: Solve for x
    x = 82,797,867,758.94/268,442.20
  6. Step 6: Final answer
    x = 308,438.34

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