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Finding the Fourth Proportional to 275,108.56, 379,644.99 and 154,249.47

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Solution

The fourth proportional to 275,108.56, 379,644.99 and 154,249.47 is: 212,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,108.56 : 379,644.99 = 154,249.47 : x
  2. Step 2: Convert to fraction form
    275,108.56/379,644.99 = 154,249.47/x
  3. Step 3: Cross multiply
    275,108.56x = 379,644.99 × 154,249.47
  4. Step 4: Simplify right side
    275,108.56x = 58,560,039,340.89
  5. Step 5: Solve for x
    x = 58,560,039,340.89/275,108.56
  6. Step 6: Final answer
    x = 212,861.57

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1.5x scale

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.