Home / 275,022.36-378,820.94-194,309.78

Finding the Fourth Proportional to 275,022.36, 378,820.94 and 194,309.78

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Solution

The fourth proportional to 275,022.36, 378,820.94 and 194,309.78 is: 267,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,022.36 : 378,820.94 = 194,309.78 : x
  2. Step 2: Convert to fraction form
    275,022.36/378,820.94 = 194,309.78/x
  3. Step 3: Cross multiply
    275,022.36x = 378,820.94 × 194,309.78
  4. Step 4: Simplify right side
    275,022.36x = 73,608,610,645.14
  5. Step 5: Solve for x
    x = 73,608,610,645.14/275,022.36
  6. Step 6: Final answer
    x = 267,645.91

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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.