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Finding the Fourth Proportional to 318,090.96, 478,128.24 and 200,517.84

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Solution

The fourth proportional to 318,090.96, 478,128.24 and 200,517.84 is: 301,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,090.96 : 478,128.24 = 200,517.84 : x
  2. Step 2: Convert to fraction form
    318,090.96/478,128.24 = 200,517.84/x
  3. Step 3: Cross multiply
    318,090.96x = 478,128.24 × 200,517.84
  4. Step 4: Simplify right side
    318,090.96x = 95,873,241,927.80
  5. Step 5: Solve for x
    x = 95,873,241,927.80/318,090.96
  6. Step 6: Final answer
    x = 301,401.97

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