Home / 221,263.40-331,856.70-80,949.80

Finding the Fourth Proportional to 221,263.40, 331,856.70 and 80,949.80

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Solution

The fourth proportional to 221,263.40, 331,856.70 and 80,949.80 is: 121,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,263.40 : 331,856.70 = 80,949.80 : x
  2. Step 2: Convert to fraction form
    221,263.40/331,856.70 = 80,949.80/x
  3. Step 3: Cross multiply
    221,263.40x = 331,856.70 × 80,949.80
  4. Step 4: Simplify right side
    221,263.40x = 26,863,733,493.66
  5. Step 5: Solve for x
    x = 26,863,733,493.66/221,263.40
  6. Step 6: Final answer
    x = 121,410.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.