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Finding the Fourth Proportional to 631,166.40, 871,016.56 and 344,694.92

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Solution

The fourth proportional to 631,166.40, 871,016.56 and 344,694.92 is: 475,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,166.40 : 871,016.56 = 344,694.92 : x
  2. Step 2: Convert to fraction form
    631,166.40/871,016.56 = 344,694.92/x
  3. Step 3: Cross multiply
    631,166.40x = 871,016.56 × 344,694.92
  4. Step 4: Simplify right side
    631,166.40x = 300,234,978,251.06
  5. Step 5: Solve for x
    x = 300,234,978,251.06/631,166.40
  6. Step 6: Final answer
    x = 475,682.76

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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.