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Finding the Fourth Proportional to 664,453.60, 996,826.20 and 215,195.20

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Solution

The fourth proportional to 664,453.60, 996,826.20 and 215,195.20 is: 322,840.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,453.60 : 996,826.20 = 215,195.20 : x
  2. Step 2: Convert to fraction form
    664,453.60/996,826.20 = 215,195.20/x
  3. Step 3: Cross multiply
    664,453.60x = 996,826.20 × 215,195.20
  4. Step 4: Simplify right side
    664,453.60x = 214,512,213,474.24
  5. Step 5: Solve for x
    x = 214,512,213,474.24/664,453.60
  6. Step 6: Final answer
    x = 322,840.02

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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.