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Finding the Fourth Proportional to 329,067, 493,603.20 and 79,749

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Solution

The fourth proportional to 329,067, 493,603.20 and 79,749 is: 119,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,067 : 493,603.20 = 79,749 : x
  2. Step 2: Convert to fraction form
    329,067/493,603.20 = 79,749/x
  3. Step 3: Cross multiply
    329,067x = 493,603.20 × 79,749
  4. Step 4: Simplify right side
    329,067x = 39,364,361,596.80
  5. Step 5: Solve for x
    x = 39,364,361,596.80/329,067
  6. Step 6: Final answer
    x = 119,624.15

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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.