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Finding the Fourth Proportional to 392,504.80, 541,625.74 and 222,738.92

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Solution

The fourth proportional to 392,504.80, 541,625.74 and 222,738.92 is: 307,362.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,504.80 : 541,625.74 = 222,738.92 : x
  2. Step 2: Convert to fraction form
    392,504.80/541,625.74 = 222,738.92/x
  3. Step 3: Cross multiply
    392,504.80x = 541,625.74 × 222,738.92
  4. Step 4: Simplify right side
    392,504.80x = 120,641,132,371.80
  5. Step 5: Solve for x
    x = 120,641,132,371.80/392,504.80
  6. Step 6: Final answer
    x = 307,362.18

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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.