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Finding the Fourth Proportional to 208,254.28, 287,358.42 and 123,357.64

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Solution

The fourth proportional to 208,254.28, 287,358.42 and 123,357.64 is: 170,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,254.28 : 287,358.42 = 123,357.64 : x
  2. Step 2: Convert to fraction form
    208,254.28/287,358.42 = 123,357.64/x
  3. Step 3: Cross multiply
    208,254.28x = 287,358.42 × 123,357.64
  4. Step 4: Simplify right side
    208,254.28x = 35,447,856,525.33
  5. Step 5: Solve for x
    x = 35,447,856,525.33/208,254.28
  6. Step 6: Final answer
    x = 170,214.30

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