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Finding the Fourth Proportional to 268,887.89, 403,581.22 and 135,861.57

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Solution

The fourth proportional to 268,887.89, 403,581.22 and 135,861.57 is: 203,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,887.89 : 403,581.22 = 135,861.57 : x
  2. Step 2: Convert to fraction form
    268,887.89/403,581.22 = 135,861.57/x
  3. Step 3: Cross multiply
    268,887.89x = 403,581.22 × 135,861.57
  4. Step 4: Simplify right side
    268,887.89x = 54,831,177,832.06
  5. Step 5: Solve for x
    x = 54,831,177,832.06/268,887.89
  6. Step 6: Final answer
    x = 203,918.36

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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.