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Finding the Fourth Proportional to 395,107.20, 590,911.20 and 332,121.60

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Solution

The fourth proportional to 395,107.20, 590,911.20 and 332,121.60 is: 496,711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,107.20 : 590,911.20 = 332,121.60 : x
  2. Step 2: Convert to fraction form
    395,107.20/590,911.20 = 332,121.60/x
  3. Step 3: Cross multiply
    395,107.20x = 590,911.20 × 332,121.60
  4. Step 4: Simplify right side
    395,107.20x = 196,254,373,201.92
  5. Step 5: Solve for x
    x = 196,254,373,201.92/395,107.20
  6. Step 6: Final answer
    x = 496,711.71

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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.