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Finding the Fourth Proportional to 215,399.20, 323,487.60 and 156,301.60

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Solution

The fourth proportional to 215,399.20, 323,487.60 and 156,301.60 is: 234,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,399.20 : 323,487.60 = 156,301.60 : x
  2. Step 2: Convert to fraction form
    215,399.20/323,487.60 = 156,301.60/x
  3. Step 3: Cross multiply
    215,399.20x = 323,487.60 × 156,301.60
  4. Step 4: Simplify right side
    215,399.20x = 50,561,629,460.16
  5. Step 5: Solve for x
    x = 50,561,629,460.16/215,399.20
  6. Step 6: Final answer
    x = 234,734.53

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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.