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Finding the Fourth Proportional to 275,608.56, 380,361.78 and 154,757.91

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Solution

The fourth proportional to 275,608.56, 380,361.78 and 154,757.91 is: 213,578.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,608.56 : 380,361.78 = 154,757.91 : x
  2. Step 2: Convert to fraction form
    275,608.56/380,361.78 = 154,757.91/x
  3. Step 3: Cross multiply
    275,608.56x = 380,361.78 × 154,757.91
  4. Step 4: Simplify right side
    275,608.56x = 58,863,994,116.68
  5. Step 5: Solve for x
    x = 58,863,994,116.68/275,608.56
  6. Step 6: Final answer
    x = 213,578.25

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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.