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Finding the Fourth Proportional to 396,908, 547,739.52 and 227,235.68

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Solution

The fourth proportional to 396,908, 547,739.52 and 227,235.68 is: 313,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,908 : 547,739.52 = 227,235.68 : x
  2. Step 2: Convert to fraction form
    396,908/547,739.52 = 227,235.68/x
  3. Step 3: Cross multiply
    396,908x = 547,739.52 × 227,235.68
  4. Step 4: Simplify right side
    396,908x = 124,465,962,290.07
  5. Step 5: Solve for x
    x = 124,465,962,290.07/396,908
  6. Step 6: Final answer
    x = 313,588.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.