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Finding the Fourth Proportional to 318,991.72, 478,471.64 and 119,297.40

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Solution

The fourth proportional to 318,991.72, 478,471.64 and 119,297.40 is: 178,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,991.72 : 478,471.64 = 119,297.40 : x
  2. Step 2: Convert to fraction form
    318,991.72/478,471.64 = 119,297.40/x
  3. Step 3: Cross multiply
    318,991.72x = 478,471.64 × 119,297.40
  4. Step 4: Simplify right side
    318,991.72x = 57,080,422,625.74
  5. Step 5: Solve for x
    x = 57,080,422,625.74/318,991.72
  6. Step 6: Final answer
    x = 178,940.14

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