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Finding the Fourth Proportional to 217,200.60, 325,825.20 and 67,439.70

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Solution

The fourth proportional to 217,200.60, 325,825.20 and 67,439.70 is: 101,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,200.60 : 325,825.20 = 67,439.70 : x
  2. Step 2: Convert to fraction form
    217,200.60/325,825.20 = 67,439.70/x
  3. Step 3: Cross multiply
    217,200.60x = 325,825.20 × 67,439.70
  4. Step 4: Simplify right side
    217,200.60x = 21,973,553,740.44
  5. Step 5: Solve for x
    x = 21,973,553,740.44/217,200.60
  6. Step 6: Final answer
    x = 101,167.10

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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.