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Finding the Fourth Proportional to 561,218.88, 842,160.18 and 206,481.80

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Solution

The fourth proportional to 561,218.88, 842,160.18 and 206,481.80 is: 309,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,218.88 : 842,160.18 = 206,481.80 : x
  2. Step 2: Convert to fraction form
    561,218.88/842,160.18 = 206,481.80/x
  3. Step 3: Cross multiply
    561,218.88x = 842,160.18 × 206,481.80
  4. Step 4: Simplify right side
    561,218.88x = 173,890,749,854.72
  5. Step 5: Solve for x
    x = 173,890,749,854.72/561,218.88
  6. Step 6: Final answer
    x = 309,844.80

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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.