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Finding the Fourth Proportional to 354,676.86, 489,449.79 and 203,773.86

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Solution

The fourth proportional to 354,676.86, 489,449.79 and 203,773.86 is: 281,205.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,676.86 : 489,449.79 = 203,773.86 : x
  2. Step 2: Convert to fraction form
    354,676.86/489,449.79 = 203,773.86/x
  3. Step 3: Cross multiply
    354,676.86x = 489,449.79 × 203,773.86
  4. Step 4: Simplify right side
    354,676.86x = 99,737,072,984.49
  5. Step 5: Solve for x
    x = 99,737,072,984.49/354,676.86
  6. Step 6: Final answer
    x = 281,205.47

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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.