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Finding the Fourth Proportional to 412,673.20, 618,232.20 and 212,311.60

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Solution

The fourth proportional to 412,673.20, 618,232.20 and 212,311.60 is: 318,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,673.20 : 618,232.20 = 212,311.60 : x
  2. Step 2: Convert to fraction form
    412,673.20/618,232.20 = 212,311.60/x
  3. Step 3: Cross multiply
    412,673.20x = 618,232.20 × 212,311.60
  4. Step 4: Simplify right side
    412,673.20x = 131,257,867,553.52
  5. Step 5: Solve for x
    x = 131,257,867,553.52/412,673.20
  6. Step 6: Final answer
    x = 318,067.34

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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.