Home / 392,712.60-541,945.98-222,949.56

Finding the Fourth Proportional to 392,712.60, 541,945.98 and 222,949.56

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Solution

The fourth proportional to 392,712.60, 541,945.98 and 222,949.56 is: 307,671.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,712.60 : 541,945.98 = 222,949.56 : x
  2. Step 2: Convert to fraction form
    392,712.60/541,945.98 = 222,949.56/x
  3. Step 3: Cross multiply
    392,712.60x = 541,945.98 × 222,949.56
  4. Step 4: Simplify right side
    392,712.60x = 120,826,617,784.77
  5. Step 5: Solve for x
    x = 120,826,617,784.77/392,712.60
  6. Step 6: Final answer
    x = 307,671.86

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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.