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Finding the Fourth Proportional to 378,146.48, 521,867.44 and 208,380.64

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Solution

The fourth proportional to 378,146.48, 521,867.44 and 208,380.64 is: 287,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,146.48 : 521,867.44 = 208,380.64 : x
  2. Step 2: Convert to fraction form
    378,146.48/521,867.44 = 208,380.64/x
  3. Step 3: Cross multiply
    378,146.48x = 521,867.44 × 208,380.64
  4. Step 4: Simplify right side
    378,146.48x = 108,747,071,142.36
  5. Step 5: Solve for x
    x = 108,747,071,142.36/378,146.48
  6. Step 6: Final answer
    x = 287,579.22

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