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Finding the Fourth Proportional to 351,644.58, 485,295.57 and 198,700.38

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Solution

The fourth proportional to 351,644.58, 485,295.57 and 198,700.38 is: 274,221.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,644.58 : 485,295.57 = 198,700.38 : x
  2. Step 2: Convert to fraction form
    351,644.58/485,295.57 = 198,700.38/x
  3. Step 3: Cross multiply
    351,644.58x = 485,295.57 × 198,700.38
  4. Step 4: Simplify right side
    351,644.58x = 96,428,414,171.32
  5. Step 5: Solve for x
    x = 96,428,414,171.32/351,644.58
  6. Step 6: Final answer
    x = 274,221.24

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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.