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Finding the Fourth Proportional to 491,379.85, 737,247.12 and 171,578.86

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Solution

The fourth proportional to 491,379.85, 737,247.12 and 171,578.86 is: 257,430.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,379.85 : 737,247.12 = 171,578.86 : x
  2. Step 2: Convert to fraction form
    491,379.85/737,247.12 = 171,578.86/x
  3. Step 3: Cross multiply
    491,379.85x = 737,247.12 × 171,578.86
  4. Step 4: Simplify right side
    491,379.85x = 126,496,017,901.35
  5. Step 5: Solve for x
    x = 126,496,017,901.35/491,379.85
  6. Step 6: Final answer
    x = 257,430.21

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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.