Home / 268,906.71-403,363.31-81,919.83

Finding the Fourth Proportional to 268,906.71, 403,363.31 and 81,919.83

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Solution

The fourth proportional to 268,906.71, 403,363.31 and 81,919.83 is: 122,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.71 : 403,363.31 = 81,919.83 : x
  2. Step 2: Convert to fraction form
    268,906.71/403,363.31 = 81,919.83/x
  3. Step 3: Cross multiply
    268,906.71x = 403,363.31 × 81,919.83
  4. Step 4: Simplify right side
    268,906.71x = 33,043,453,373.84
  5. Step 5: Solve for x
    x = 33,043,453,373.84/268,906.71
  6. Step 6: Final answer
    x = 122,880.73

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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.