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Finding the Fourth Proportional to 272,340.60, 408,948.30 and 205,855.80

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Solution

The fourth proportional to 272,340.60, 408,948.30 and 205,855.80 is: 309,114.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,340.60 : 408,948.30 = 205,855.80 : x
  2. Step 2: Convert to fraction form
    272,340.60/408,948.30 = 205,855.80/x
  3. Step 3: Cross multiply
    272,340.60x = 408,948.30 × 205,855.80
  4. Step 4: Simplify right side
    272,340.60x = 84,184,379,455.14
  5. Step 5: Solve for x
    x = 84,184,379,455.14/272,340.60
  6. Step 6: Final answer
    x = 309,114.32

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