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Finding the Fourth Proportional to 252,665.38, 378,871.29 and 84,126.34

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Solution

The fourth proportional to 252,665.38, 378,871.29 and 84,126.34 is: 126,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,665.38 : 378,871.29 = 84,126.34 : x
  2. Step 2: Convert to fraction form
    252,665.38/378,871.29 = 84,126.34/x
  3. Step 3: Cross multiply
    252,665.38x = 378,871.29 × 84,126.34
  4. Step 4: Simplify right side
    252,665.38x = 31,873,054,958.78
  5. Step 5: Solve for x
    x = 31,873,054,958.78/252,665.38
  6. Step 6: Final answer
    x = 126,147.30

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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.