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Finding the Fourth Proportional to 258,449.95, 387,516.16 and 100,494.28

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Solution

The fourth proportional to 258,449.95, 387,516.16 and 100,494.28 is: 150,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,449.95 : 387,516.16 = 100,494.28 : x
  2. Step 2: Convert to fraction form
    258,449.95/387,516.16 = 100,494.28/x
  3. Step 3: Cross multiply
    258,449.95x = 387,516.16 × 100,494.28
  4. Step 4: Simplify right side
    258,449.95x = 38,943,157,487.56
  5. Step 5: Solve for x
    x = 38,943,157,487.56/258,449.95
  6. Step 6: Final answer
    x = 150,679.69

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