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Finding the Fourth Proportional to 561,252.78, 842,211.32 and 206,515.91

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Solution

The fourth proportional to 561,252.78, 842,211.32 and 206,515.91 is: 309,896.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,252.78 : 842,211.32 = 206,515.91 : x
  2. Step 2: Convert to fraction form
    561,252.78/842,211.32 = 206,515.91/x
  3. Step 3: Cross multiply
    561,252.78x = 842,211.32 × 206,515.91
  4. Step 4: Simplify right side
    561,252.78x = 173,930,037,162.10
  5. Step 5: Solve for x
    x = 173,930,037,162.10/561,252.78
  6. Step 6: Final answer
    x = 309,896.08

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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.