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Finding the Fourth Proportional to 351,710.38, 485,380.84 and 198,744.68

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Solution

The fourth proportional to 351,710.38, 485,380.84 and 198,744.68 is: 274,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,710.38 : 485,380.84 = 198,744.68 : x
  2. Step 2: Convert to fraction form
    351,710.38/485,380.84 = 198,744.68/x
  3. Step 3: Cross multiply
    351,710.38x = 485,380.84 × 198,744.68
  4. Step 4: Simplify right side
    351,710.38x = 96,466,859,723.93
  5. Step 5: Solve for x
    x = 96,466,859,723.93/351,710.38
  6. Step 6: Final answer
    x = 274,279.25

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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.