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Finding the Fourth Proportional to 222,172.48, 333,290.36 and 81,920.20

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Solution

The fourth proportional to 222,172.48, 333,290.36 and 81,920.20 is: 122,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,172.48 : 333,290.36 = 81,920.20 : x
  2. Step 2: Convert to fraction form
    222,172.48/333,290.36 = 81,920.20/x
  3. Step 3: Cross multiply
    222,172.48x = 333,290.36 × 81,920.20
  4. Step 4: Simplify right side
    222,172.48x = 27,303,212,949.27
  5. Step 5: Solve for x
    x = 27,303,212,949.27/222,172.48
  6. Step 6: Final answer
    x = 122,891.97

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1.5x scale

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.