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Finding the Fourth Proportional to 328.64, 493.04 and 136.12

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Solution

The fourth proportional to 328.64, 493.04 and 136.12 is: 204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.64 : 493.04 = 136.12 : x
  2. Step 2: Convert to fraction form
    328.64/493.04 = 136.12/x
  3. Step 3: Cross multiply
    328.64x = 493.04 × 136.12
  4. Step 4: Simplify right side
    328.64x = 67,112.60
  5. Step 5: Solve for x
    x = 67,112.60/328.64
  6. Step 6: Final answer
    x = 204.21

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