Home / 275,920.20-380,771.37-161,205.57

Finding the Fourth Proportional to 275,920.20, 380,771.37 and 161,205.57

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Solution

The fourth proportional to 275,920.20, 380,771.37 and 161,205.57 is: 222,464.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,920.20 : 380,771.37 = 161,205.57 : x
  2. Step 2: Convert to fraction form
    275,920.20/380,771.37 = 161,205.57/x
  3. Step 3: Cross multiply
    275,920.20x = 380,771.37 × 161,205.57
  4. Step 4: Simplify right side
    275,920.20x = 61,382,465,740.53
  5. Step 5: Solve for x
    x = 61,382,465,740.53/275,920.20
  6. Step 6: Final answer
    x = 222,464.56

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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.