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Finding the Fourth Proportional to 449,876, 620,829.96 and 248,672

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Solution

The fourth proportional to 449,876, 620,829.96 and 248,672 is: 343,167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,876 : 620,829.96 = 248,672 : x
  2. Step 2: Convert to fraction form
    449,876/620,829.96 = 248,672/x
  3. Step 3: Cross multiply
    449,876x = 620,829.96 × 248,672
  4. Step 4: Simplify right side
    449,876x = 154,383,027,813.12
  5. Step 5: Solve for x
    x = 154,383,027,813.12/449,876
  6. Step 6: Final answer
    x = 343,167.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.