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Finding the Fourth Proportional to 318,402.81, 477,621.36 and 81,747.54

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Solution

The fourth proportional to 318,402.81, 477,621.36 and 81,747.54 is: 122,625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,402.81 : 477,621.36 = 81,747.54 : x
  2. Step 2: Convert to fraction form
    318,402.81/477,621.36 = 81,747.54/x
  3. Step 3: Cross multiply
    318,402.81x = 477,621.36 × 81,747.54
  4. Step 4: Simplify right side
    318,402.81x = 39,044,371,231.45
  5. Step 5: Solve for x
    x = 39,044,371,231.45/318,402.81
  6. Step 6: Final answer
    x = 122,625.71

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