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Finding the Fourth Proportional to 275,863.40, 413,795.10 and 205,879.40

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Solution

The fourth proportional to 275,863.40, 413,795.10 and 205,879.40 is: 308,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,863.40 : 413,795.10 = 205,879.40 : x
  2. Step 2: Convert to fraction form
    275,863.40/413,795.10 = 205,879.40/x
  3. Step 3: Cross multiply
    275,863.40x = 413,795.10 × 205,879.40
  4. Step 4: Simplify right side
    275,863.40x = 85,191,886,910.94
  5. Step 5: Solve for x
    x = 85,191,886,910.94/275,863.40
  6. Step 6: Final answer
    x = 308,819.10

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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.