Home / 268,906.46-403,362.93-81,919.58

Finding the Fourth Proportional to 268,906.46, 403,362.93 and 81,919.58

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Solution

The fourth proportional to 268,906.46, 403,362.93 and 81,919.58 is: 122,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.46 : 403,362.93 = 81,919.58 : x
  2. Step 2: Convert to fraction form
    268,906.46/403,362.93 = 81,919.58/x
  3. Step 3: Cross multiply
    268,906.46x = 403,362.93 × 81,919.58
  4. Step 4: Simplify right side
    268,906.46x = 33,043,321,813.17
  5. Step 5: Solve for x
    x = 33,043,321,813.17/268,906.46
  6. Step 6: Final answer
    x = 122,880.36

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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.