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Finding the Fourth Proportional to 352,791.12, 486,859.32 and 199,830

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Solution

The fourth proportional to 352,791.12, 486,859.32 and 199,830 is: 275,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,791.12 : 486,859.32 = 199,830 : x
  2. Step 2: Convert to fraction form
    352,791.12/486,859.32 = 199,830/x
  3. Step 3: Cross multiply
    352,791.12x = 486,859.32 × 199,830
  4. Step 4: Simplify right side
    352,791.12x = 97,289,097,915.60
  5. Step 5: Solve for x
    x = 97,289,097,915.60/352,791.12
  6. Step 6: Final answer
    x = 275,769.69

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