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Finding the Fourth Proportional to 465,450.87, 698,162.36 and 128,512.11

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Solution

The fourth proportional to 465,450.87, 698,162.36 and 128,512.11 is: 192,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,450.87 : 698,162.36 = 128,512.11 : x
  2. Step 2: Convert to fraction form
    465,450.87/698,162.36 = 128,512.11/x
  3. Step 3: Cross multiply
    465,450.87x = 698,162.36 × 128,512.11
  4. Step 4: Simplify right side
    465,450.87x = 89,722,317,363.62
  5. Step 5: Solve for x
    x = 89,722,317,363.62/465,450.87
  6. Step 6: Final answer
    x = 192,764.31

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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.