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Finding the Fourth Proportional to 397,855.74, 548,855.55 and 236,620.38

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Solution

The fourth proportional to 397,855.74, 548,855.55 and 236,620.38 is: 326,425.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,855.74 : 548,855.55 = 236,620.38 : x
  2. Step 2: Convert to fraction form
    397,855.74/548,855.55 = 236,620.38/x
  3. Step 3: Cross multiply
    397,855.74x = 548,855.55 × 236,620.38
  4. Step 4: Simplify right side
    397,855.74x = 129,870,408,806.11
  5. Step 5: Solve for x
    x = 129,870,408,806.11/397,855.74
  6. Step 6: Final answer
    x = 326,425.88

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1.5x scale

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.