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Finding the Fourth Proportional to 324.24, 486.36 and 118.81

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Solution

The fourth proportional to 324.24, 486.36 and 118.81 is: 178.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.24 : 486.36 = 118.81 : x
  2. Step 2: Convert to fraction form
    324.24/486.36 = 118.81/x
  3. Step 3: Cross multiply
    324.24x = 486.36 × 118.81
  4. Step 4: Simplify right side
    324.24x = 57,783.84
  5. Step 5: Solve for x
    x = 57,783.84/324.24
  6. Step 6: Final answer
    x = 178.22

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