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Finding the Fourth Proportional to 248,286, 372,487.32 and 82,074

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Solution

The fourth proportional to 248,286, 372,487.32 and 82,074 is: 123,130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,286 : 372,487.32 = 82,074 : x
  2. Step 2: Convert to fraction form
    248,286/372,487.32 = 82,074/x
  3. Step 3: Cross multiply
    248,286x = 372,487.32 × 82,074
  4. Step 4: Simplify right side
    248,286x = 30,571,524,301.68
  5. Step 5: Solve for x
    x = 30,571,524,301.68/248,286
  6. Step 6: Final answer
    x = 123,130.28

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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.