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Finding the Fourth Proportional to 352,687.03, 486,691.83 and 199,721.72

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Solution

The fourth proportional to 352,687.03, 486,691.83 and 199,721.72 is: 275,606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,687.03 : 486,691.83 = 199,721.72 : x
  2. Step 2: Convert to fraction form
    352,687.03/486,691.83 = 199,721.72/x
  3. Step 3: Cross multiply
    352,687.03x = 486,691.83 × 199,721.72
  4. Step 4: Simplify right side
    352,687.03x = 97,202,929,397.55
  5. Step 5: Solve for x
    x = 97,202,929,397.55/352,687.03
  6. Step 6: Final answer
    x = 275,606.76

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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.