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Finding the Fourth Proportional to 230,268.57, 315,469.11 and 221,639.52

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Solution

The fourth proportional to 230,268.57, 315,469.11 and 221,639.52 is: 303,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,268.57 : 315,469.11 = 221,639.52 : x
  2. Step 2: Convert to fraction form
    230,268.57/315,469.11 = 221,639.52/x
  3. Step 3: Cross multiply
    230,268.57x = 315,469.11 × 221,639.52
  4. Step 4: Simplify right side
    230,268.57x = 69,920,422,115.23
  5. Step 5: Solve for x
    x = 69,920,422,115.23/230,268.57
  6. Step 6: Final answer
    x = 303,647.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.