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Finding the Fourth Proportional to 217,422.70, 325,972.05 and 112,317.10

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Solution

The fourth proportional to 217,422.70, 325,972.05 and 112,317.10 is: 168,391.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,422.70 : 325,972.05 = 112,317.10 : x
  2. Step 2: Convert to fraction form
    217,422.70/325,972.05 = 112,317.10/x
  3. Step 3: Cross multiply
    217,422.70x = 325,972.05 × 112,317.10
  4. Step 4: Simplify right side
    217,422.70x = 36,612,235,337.06
  5. Step 5: Solve for x
    x = 36,612,235,337.06/217,422.70
  6. Step 6: Final answer
    x = 168,391.96

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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.