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Finding the Fourth Proportional to 275,399.87, 379,748.26 and 190,369.31

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Solution

The fourth proportional to 275,399.87, 379,748.26 and 190,369.31 is: 262,499.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,399.87 : 379,748.26 = 190,369.31 : x
  2. Step 2: Convert to fraction form
    275,399.87/379,748.26 = 190,369.31/x
  3. Step 3: Cross multiply
    275,399.87x = 379,748.26 × 190,369.31
  4. Step 4: Simplify right side
    275,399.87x = 72,292,414,229.90
  5. Step 5: Solve for x
    x = 72,292,414,229.90/275,399.87
  6. Step 6: Final answer
    x = 262,499.81

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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.