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Finding the Fourth Proportional to 663,252.44, 995,020.82 and 213,999

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Solution

The fourth proportional to 663,252.44, 995,020.82 and 213,999 is: 321,044.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,252.44 : 995,020.82 = 213,999 : x
  2. Step 2: Convert to fraction form
    663,252.44/995,020.82 = 213,999/x
  3. Step 3: Cross multiply
    663,252.44x = 995,020.82 × 213,999
  4. Step 4: Simplify right side
    663,252.44x = 212,933,460,459.18
  5. Step 5: Solve for x
    x = 212,933,460,459.18/663,252.44
  6. Step 6: Final answer
    x = 321,044.37

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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.