Home / 268,906.50-403,359.78-81,918

Finding the Fourth Proportional to 268,906.50, 403,359.78 and 81,918

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Solution

The fourth proportional to 268,906.50, 403,359.78 and 81,918 is: 122,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.50 : 403,359.78 = 81,918 : x
  2. Step 2: Convert to fraction form
    268,906.50/403,359.78 = 81,918/x
  3. Step 3: Cross multiply
    268,906.50x = 403,359.78 × 81,918
  4. Step 4: Simplify right side
    268,906.50x = 33,042,426,458.04
  5. Step 5: Solve for x
    x = 33,042,426,458.04/268,906.50
  6. Step 6: Final answer
    x = 122,877.01

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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.