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Finding the Fourth Proportional to 279,328.26, 418,996.30 and 79,648.73

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Solution

The fourth proportional to 279,328.26, 418,996.30 and 79,648.73 is: 119,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,328.26 : 418,996.30 = 79,648.73 : x
  2. Step 2: Convert to fraction form
    279,328.26/418,996.30 = 79,648.73/x
  3. Step 3: Cross multiply
    279,328.26x = 418,996.30 × 79,648.73
  4. Step 4: Simplify right side
    279,328.26x = 33,372,523,169.70
  5. Step 5: Solve for x
    x = 33,372,523,169.70/279,328.26
  6. Step 6: Final answer
    x = 119,474.21

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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.