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Finding the Fourth Proportional to 217,331.70, 325,997.55 and 137,615.55

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Solution

The fourth proportional to 217,331.70, 325,997.55 and 137,615.55 is: 206,423.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,331.70 : 325,997.55 = 137,615.55 : x
  2. Step 2: Convert to fraction form
    217,331.70/325,997.55 = 137,615.55/x
  3. Step 3: Cross multiply
    217,331.70x = 325,997.55 × 137,615.55
  4. Step 4: Simplify right side
    217,331.70x = 44,862,332,141.90
  5. Step 5: Solve for x
    x = 44,862,332,141.90/217,331.70
  6. Step 6: Final answer
    x = 206,423.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.