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Finding the Fourth Proportional to 206,825.10, 310,310.55 and 199,535.10

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Solution

The fourth proportional to 206,825.10, 310,310.55 and 199,535.10 is: 299,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,825.10 : 310,310.55 = 199,535.10 : x
  2. Step 2: Convert to fraction form
    206,825.10/310,310.55 = 199,535.10/x
  3. Step 3: Cross multiply
    206,825.10x = 310,310.55 × 199,535.10
  4. Step 4: Simplify right side
    206,825.10x = 61,917,846,625.31
  5. Step 5: Solve for x
    x = 61,917,846,625.31/206,825.10
  6. Step 6: Final answer
    x = 299,372.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.