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Finding the Fourth Proportional to 631,372.92, 871,262.15 and 344,837.64

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Solution

The fourth proportional to 631,372.92, 871,262.15 and 344,837.64 is: 475,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,372.92 : 871,262.15 = 344,837.64 : x
  2. Step 2: Convert to fraction form
    631,372.92/871,262.15 = 344,837.64/x
  3. Step 3: Cross multiply
    631,372.92x = 871,262.15 × 344,837.64
  4. Step 4: Simplify right side
    631,372.92x = 300,443,985,170.37
  5. Step 5: Solve for x
    x = 300,443,985,170.37/631,372.92
  6. Step 6: Final answer
    x = 475,858.21

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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.