Home / 275,876.28-380,731.32-155,023.20

Finding the Fourth Proportional to 275,876.28, 380,731.32 and 155,023.20

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Solution

The fourth proportional to 275,876.28, 380,731.32 and 155,023.20 is: 213,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,876.28 : 380,731.32 = 155,023.20 : x
  2. Step 2: Convert to fraction form
    275,876.28/380,731.32 = 155,023.20/x
  3. Step 3: Cross multiply
    275,876.28x = 380,731.32 × 155,023.20
  4. Step 4: Simplify right side
    275,876.28x = 59,022,187,566.62
  5. Step 5: Solve for x
    x = 59,022,187,566.62/275,876.28
  6. Step 6: Final answer
    x = 213,944.41

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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.