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Finding the Fourth Proportional to 328,896.13, 493,344.20 and 79,578.13

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Solution

The fourth proportional to 328,896.13, 493,344.20 and 79,578.13 is: 119,367.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,896.13 : 493,344.20 = 79,578.13 : x
  2. Step 2: Convert to fraction form
    328,896.13/493,344.20 = 79,578.13/x
  3. Step 3: Cross multiply
    328,896.13x = 493,344.20 × 79,578.13
  4. Step 4: Simplify right side
    328,896.13x = 39,259,407,251.09
  5. Step 5: Solve for x
    x = 39,259,407,251.09/328,896.13
  6. Step 6: Final answer
    x = 119,367.19

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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.