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Finding the Fourth Proportional to 259,064.20, 387,940.20 and 206,576.20

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Solution

The fourth proportional to 259,064.20, 387,940.20 and 206,576.20 is: 309,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,064.20 : 387,940.20 = 206,576.20 : x
  2. Step 2: Convert to fraction form
    259,064.20/387,940.20 = 206,576.20/x
  3. Step 3: Cross multiply
    259,064.20x = 387,940.20 × 206,576.20
  4. Step 4: Simplify right side
    259,064.20x = 80,139,212,343.24
  5. Step 5: Solve for x
    x = 80,139,212,343.24/259,064.20
  6. Step 6: Final answer
    x = 309,341.13

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