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Finding the Fourth Proportional to 279,147.89, 418,724.43 and 79,468.25

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Solution

The fourth proportional to 279,147.89, 418,724.43 and 79,468.25 is: 119,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,147.89 : 418,724.43 = 79,468.25 : x
  2. Step 2: Convert to fraction form
    279,147.89/418,724.43 = 79,468.25/x
  3. Step 3: Cross multiply
    279,147.89x = 418,724.43 × 79,468.25
  4. Step 4: Simplify right side
    279,147.89x = 33,275,297,684.35
  5. Step 5: Solve for x
    x = 33,275,297,684.35/279,147.89
  6. Step 6: Final answer
    x = 119,203.11

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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.