Home / 274,348.80-378,518.40-161,107.20

Finding the Fourth Proportional to 274,348.80, 378,518.40 and 161,107.20

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Solution

The fourth proportional to 274,348.80, 378,518.40 and 161,107.20 is: 222,279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,348.80 : 378,518.40 = 161,107.20 : x
  2. Step 2: Convert to fraction form
    274,348.80/378,518.40 = 161,107.20/x
  3. Step 3: Cross multiply
    274,348.80x = 378,518.40 × 161,107.20
  4. Step 4: Simplify right side
    274,348.80x = 60,982,039,572.48
  5. Step 5: Solve for x
    x = 60,982,039,572.48/274,348.80
  6. Step 6: Final answer
    x = 222,279.23

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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.