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Finding the Fourth Proportional to 279,009.44, 418,685.48 and 221,744.60

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Solution

The fourth proportional to 279,009.44, 418,685.48 and 221,744.60 is: 332,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,009.44 : 418,685.48 = 221,744.60 : x
  2. Step 2: Convert to fraction form
    279,009.44/418,685.48 = 221,744.60/x
  3. Step 3: Cross multiply
    279,009.44x = 418,685.48 × 221,744.60
  4. Step 4: Simplify right side
    279,009.44x = 92,841,241,086.26
  5. Step 5: Solve for x
    x = 92,841,241,086.26/279,009.44
  6. Step 6: Final answer
    x = 332,753.05

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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.