Home / 351,972.23-485,691.77-198,989.20

Finding the Fourth Proportional to 351,972.23, 485,691.77 and 198,989.20

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Solution

The fourth proportional to 351,972.23, 485,691.77 and 198,989.20 is: 274,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,972.23 : 485,691.77 = 198,989.20 : x
  2. Step 2: Convert to fraction form
    351,972.23/485,691.77 = 198,989.20/x
  3. Step 3: Cross multiply
    351,972.23x = 485,691.77 × 198,989.20
  4. Step 4: Simplify right side
    351,972.23x = 96,647,414,549.71
  5. Step 5: Solve for x
    x = 96,647,414,549.71/351,972.23
  6. Step 6: Final answer
    x = 274,588.19

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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.