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Finding the Fourth Proportional to 279,583.45, 419,375.18 and 69,221.39

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Solution

The fourth proportional to 279,583.45, 419,375.18 and 69,221.39 is: 103,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,583.45 : 419,375.18 = 69,221.39 : x
  2. Step 2: Convert to fraction form
    279,583.45/419,375.18 = 69,221.39/x
  3. Step 3: Cross multiply
    279,583.45x = 419,375.18 × 69,221.39
  4. Step 4: Simplify right side
    279,583.45x = 29,029,732,544.99
  5. Step 5: Solve for x
    x = 29,029,732,544.99/279,583.45
  6. Step 6: Final answer
    x = 103,832.09

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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.