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Finding the Fourth Proportional to 483,379.47, 667,039.75 and 279,410.96

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Solution

The fourth proportional to 483,379.47, 667,039.75 and 279,410.96 is: 385,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,379.47 : 667,039.75 = 279,410.96 : x
  2. Step 2: Convert to fraction form
    483,379.47/667,039.75 = 279,410.96/x
  3. Step 3: Cross multiply
    483,379.47x = 667,039.75 × 279,410.96
  4. Step 4: Simplify right side
    483,379.47x = 186,378,217,874.73
  5. Step 5: Solve for x
    x = 186,378,217,874.73/483,379.47
  6. Step 6: Final answer
    x = 385,573.30

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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.