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Finding the Fourth Proportional to 230,522.50, 318,108.78 and 128,558.44

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Solution

The fourth proportional to 230,522.50, 318,108.78 and 128,558.44 is: 177,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,522.50 : 318,108.78 = 128,558.44 : x
  2. Step 2: Convert to fraction form
    230,522.50/318,108.78 = 128,558.44/x
  3. Step 3: Cross multiply
    230,522.50x = 318,108.78 × 128,558.44
  4. Step 4: Simplify right side
    230,522.50x = 40,895,568,507.10
  5. Step 5: Solve for x
    x = 40,895,568,507.10/230,522.50
  6. Step 6: Final answer
    x = 177,403.80

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