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Finding the Fourth Proportional to 568,046.60, 851,745.90 and 213,072.20

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Solution

The fourth proportional to 568,046.60, 851,745.90 and 213,072.20 is: 319,486.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,046.60 : 851,745.90 = 213,072.20 : x
  2. Step 2: Convert to fraction form
    568,046.60/851,745.90 = 213,072.20/x
  3. Step 3: Cross multiply
    568,046.60x = 851,745.90 × 213,072.20
  4. Step 4: Simplify right side
    568,046.60x = 181,483,372,753.98
  5. Step 5: Solve for x
    x = 181,483,372,753.98/568,046.60
  6. Step 6: Final answer
    x = 319,486.77

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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.