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Finding the Fourth Proportional to 352,855, 486,939.90 and 193,879

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Solution

The fourth proportional to 352,855, 486,939.90 and 193,879 is: 267,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,855 : 486,939.90 = 193,879 : x
  2. Step 2: Convert to fraction form
    352,855/486,939.90 = 193,879/x
  3. Step 3: Cross multiply
    352,855x = 486,939.90 × 193,879
  4. Step 4: Simplify right side
    352,855x = 94,407,420,872.10
  5. Step 5: Solve for x
    x = 94,407,420,872.10/352,855
  6. Step 6: Final answer
    x = 267,553.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.