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Finding the Fourth Proportional to 352,693.90, 486,714.18 and 199,728.10

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Solution

The fourth proportional to 352,693.90, 486,714.18 and 199,728.10 is: 275,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,693.90 : 486,714.18 = 199,728.10 : x
  2. Step 2: Convert to fraction form
    352,693.90/486,714.18 = 199,728.10/x
  3. Step 3: Cross multiply
    352,693.90x = 486,714.18 × 199,728.10
  4. Step 4: Simplify right side
    352,693.90x = 97,210,498,414.46
  5. Step 5: Solve for x
    x = 97,210,498,414.46/352,693.90
  6. Step 6: Final answer
    x = 275,622.85

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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.