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Finding the Fourth Proportional to 396,010.80, 593,999.88 and 143,297.28

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Solution

The fourth proportional to 396,010.80, 593,999.88 and 143,297.28 is: 214,940.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,010.80 : 593,999.88 = 143,297.28 : x
  2. Step 2: Convert to fraction form
    396,010.80/593,999.88 = 143,297.28/x
  3. Step 3: Cross multiply
    396,010.80x = 593,999.88 × 143,297.28
  4. Step 4: Simplify right side
    396,010.80x = 85,118,567,124.33
  5. Step 5: Solve for x
    x = 85,118,567,124.33/396,010.80
  6. Step 6: Final answer
    x = 214,940.01

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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.