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Finding the Fourth Proportional to 395,251.20, 588,266.40 and 394,022.40

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Solution

The fourth proportional to 395,251.20, 588,266.40 and 394,022.40 is: 586,437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,251.20 : 588,266.40 = 394,022.40 : x
  2. Step 2: Convert to fraction form
    395,251.20/588,266.40 = 394,022.40/x
  3. Step 3: Cross multiply
    395,251.20x = 588,266.40 × 394,022.40
  4. Step 4: Simplify right side
    395,251.20x = 231,790,138,767.36
  5. Step 5: Solve for x
    x = 231,790,138,767.36/395,251.20
  6. Step 6: Final answer
    x = 586,437.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.