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Finding the Fourth Proportional to 491,380.85, 737,248.62 and 171,579.86

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Solution

The fourth proportional to 491,380.85, 737,248.62 and 171,579.86 is: 257,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,380.85 : 737,248.62 = 171,579.86 : x
  2. Step 2: Convert to fraction form
    491,380.85/737,248.62 = 171,579.86/x
  3. Step 3: Cross multiply
    491,380.85x = 737,248.62 × 171,579.86
  4. Step 4: Simplify right side
    491,380.85x = 126,497,015,004.79
  5. Step 5: Solve for x
    x = 126,497,015,004.79/491,380.85
  6. Step 6: Final answer
    x = 257,431.72

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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.