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Finding the Fourth Proportional to 217,217.60, 325,826.40 and 187,150.40

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Solution

The fourth proportional to 217,217.60, 325,826.40 and 187,150.40 is: 280,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,217.60 : 325,826.40 = 187,150.40 : x
  2. Step 2: Convert to fraction form
    217,217.60/325,826.40 = 187,150.40/x
  3. Step 3: Cross multiply
    217,217.60x = 325,826.40 × 187,150.40
  4. Step 4: Simplify right side
    217,217.60x = 60,978,541,090.56
  5. Step 5: Solve for x
    x = 60,978,541,090.56/217,217.60
  6. Step 6: Final answer
    x = 280,725.60

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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.