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Finding the Fourth Proportional to 286,370.85, 395,234.88 and 206,064.21

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Solution

The fourth proportional to 286,370.85, 395,234.88 and 206,064.21 is: 284,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,370.85 : 395,234.88 = 206,064.21 : x
  2. Step 2: Convert to fraction form
    286,370.85/395,234.88 = 206,064.21/x
  3. Step 3: Cross multiply
    286,370.85x = 395,234.88 × 206,064.21
  4. Step 4: Simplify right side
    286,370.85x = 81,443,763,311.64
  5. Step 5: Solve for x
    x = 81,443,763,311.64/286,370.85
  6. Step 6: Final answer
    x = 284,399.63

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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.