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Finding the Fourth Proportional to 639,203.82, 958,556.55 and 239,626.56

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Solution

The fourth proportional to 639,203.82, 958,556.55 and 239,626.56 is: 359,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,203.82 : 958,556.55 = 239,626.56 : x
  2. Step 2: Convert to fraction form
    639,203.82/958,556.55 = 239,626.56/x
  3. Step 3: Cross multiply
    639,203.82x = 958,556.55 × 239,626.56
  4. Step 4: Simplify right side
    639,203.82x = 229,695,608,641.97
  5. Step 5: Solve for x
    x = 229,695,608,641.97/639,203.82
  6. Step 6: Final answer
    x = 359,346.43

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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.