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Finding the Fourth Proportional to 625,213.13, 936,321.19 and 320,806.22

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Solution

The fourth proportional to 625,213.13, 936,321.19 and 320,806.22 is: 480,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,213.13 : 936,321.19 = 320,806.22 : x
  2. Step 2: Convert to fraction form
    625,213.13/936,321.19 = 320,806.22/x
  3. Step 3: Cross multiply
    625,213.13x = 936,321.19 × 320,806.22
  4. Step 4: Simplify right side
    625,213.13x = 300,377,656,186.18
  5. Step 5: Solve for x
    x = 300,377,656,186.18/625,213.13
  6. Step 6: Final answer
    x = 480,440.42

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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.