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Finding the Fourth Proportional to 275,671.96, 380,436.48 and 154,834.54

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Solution

The fourth proportional to 275,671.96, 380,436.48 and 154,834.54 is: 213,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,671.96 : 380,436.48 = 154,834.54 : x
  2. Step 2: Convert to fraction form
    275,671.96/380,436.48 = 154,834.54/x
  3. Step 3: Cross multiply
    275,671.96x = 380,436.48 × 154,834.54
  4. Step 4: Simplify right side
    275,671.96x = 58,904,707,380.02
  5. Step 5: Solve for x
    x = 58,904,707,380.02/275,671.96
  6. Step 6: Final answer
    x = 213,676.82

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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.