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Finding the Fourth Proportional to 354,910.06, 489,832.11 and 225,713.83

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Solution

The fourth proportional to 354,910.06, 489,832.11 and 225,713.83 is: 311,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,910.06 : 489,832.11 = 225,713.83 : x
  2. Step 2: Convert to fraction form
    354,910.06/489,832.11 = 225,713.83/x
  3. Step 3: Cross multiply
    354,910.06x = 489,832.11 × 225,713.83
  4. Step 4: Simplify right side
    354,910.06x = 110,561,882,676.59
  5. Step 5: Solve for x
    x = 110,561,882,676.59/354,910.06
  6. Step 6: Final answer
    x = 311,520.85

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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.