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Finding the Fourth Proportional to 279,301.62, 418,889.31 and 79,617.72

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Solution

The fourth proportional to 279,301.62, 418,889.31 and 79,617.72 is: 119,408.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,301.62 : 418,889.31 = 79,617.72 : x
  2. Step 2: Convert to fraction form
    279,301.62/418,889.31 = 79,617.72/x
  3. Step 3: Cross multiply
    279,301.62x = 418,889.31 × 79,617.72
  4. Step 4: Simplify right side
    279,301.62x = 33,351,011,794.57
  5. Step 5: Solve for x
    x = 33,351,011,794.57/279,301.62
  6. Step 6: Final answer
    x = 119,408.59

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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.