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Finding the Fourth Proportional to 217,993.45, 326,856.36 and 84,718.09

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Solution

The fourth proportional to 217,993.45, 326,856.36 and 84,718.09 is: 127,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,993.45 : 326,856.36 = 84,718.09 : x
  2. Step 2: Convert to fraction form
    217,993.45/326,856.36 = 84,718.09/x
  3. Step 3: Cross multiply
    217,993.45x = 326,856.36 × 84,718.09
  4. Step 4: Simplify right side
    217,993.45x = 27,690,646,523.55
  5. Step 5: Solve for x
    x = 27,690,646,523.55/217,993.45
  6. Step 6: Final answer
    x = 127,025.13

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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.