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Finding the Fourth Proportional to 328,469.46, 492,704.19 and 79,151.46

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Solution

The fourth proportional to 328,469.46, 492,704.19 and 79,151.46 is: 118,727.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,469.46 : 492,704.19 = 79,151.46 : x
  2. Step 2: Convert to fraction form
    328,469.46/492,704.19 = 79,151.46/x
  3. Step 3: Cross multiply
    328,469.46x = 492,704.19 × 79,151.46
  4. Step 4: Simplify right side
    328,469.46x = 38,998,255,986.62
  5. Step 5: Solve for x
    x = 38,998,255,986.62/328,469.46
  6. Step 6: Final answer
    x = 118,727.19

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Similar ratio
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1.5x scale

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.