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Finding the Fourth Proportional to 378,965.79, 522,959.09 and 209,196.27

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Solution

The fourth proportional to 378,965.79, 522,959.09 and 209,196.27 is: 288,683.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,965.79 : 522,959.09 = 209,196.27 : x
  2. Step 2: Convert to fraction form
    378,965.79/522,959.09 = 209,196.27/x
  3. Step 3: Cross multiply
    378,965.79x = 522,959.09 × 209,196.27
  4. Step 4: Simplify right side
    378,965.79x = 109,401,089,944.61
  5. Step 5: Solve for x
    x = 109,401,089,944.61/378,965.79
  6. Step 6: Final answer
    x = 288,683.29

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