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Finding the Fourth Proportional to 209,954.80, 315,029.40 and 110,227.60

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Solution

The fourth proportional to 209,954.80, 315,029.40 and 110,227.60 is: 165,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,954.80 : 315,029.40 = 110,227.60 : x
  2. Step 2: Convert to fraction form
    209,954.80/315,029.40 = 110,227.60/x
  3. Step 3: Cross multiply
    209,954.80x = 315,029.40 × 110,227.60
  4. Step 4: Simplify right side
    209,954.80x = 34,724,934,691.44
  5. Step 5: Solve for x
    x = 34,724,934,691.44/209,954.80
  6. Step 6: Final answer
    x = 165,392.43

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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.