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Finding the Fourth Proportional to 217,200.30, 325,788.30 and 67,439.40

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Solution

The fourth proportional to 217,200.30, 325,788.30 and 67,439.40 is: 101,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,200.30 : 325,788.30 = 67,439.40 : x
  2. Step 2: Convert to fraction form
    217,200.30/325,788.30 = 67,439.40/x
  3. Step 3: Cross multiply
    217,200.30x = 325,788.30 × 67,439.40
  4. Step 4: Simplify right side
    217,200.30x = 21,970,967,479.02
  5. Step 5: Solve for x
    x = 21,970,967,479.02/217,200.30
  6. Step 6: Final answer
    x = 101,155.33

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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.