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Finding the Fourth Proportional to 404,286.09, 606,568.97 and 138,233.89

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Solution

The fourth proportional to 404,286.09, 606,568.97 and 138,233.89 is: 207,398.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,286.09 : 606,568.97 = 138,233.89 : x
  2. Step 2: Convert to fraction form
    404,286.09/606,568.97 = 138,233.89/x
  3. Step 3: Cross multiply
    404,286.09x = 606,568.97 × 138,233.89
  4. Step 4: Simplify right side
    404,286.09x = 83,848,388,276.39
  5. Step 5: Solve for x
    x = 83,848,388,276.39/404,286.09
  6. Step 6: Final answer
    x = 207,398.65

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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.