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Finding the Fourth Proportional to 222,054.32, 333,212.68 and 81,911.36

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Solution

The fourth proportional to 222,054.32, 333,212.68 and 81,911.36 is: 122,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,054.32 : 333,212.68 = 81,911.36 : x
  2. Step 2: Convert to fraction form
    222,054.32/333,212.68 = 81,911.36/x
  3. Step 3: Cross multiply
    222,054.32x = 333,212.68 × 81,911.36
  4. Step 4: Simplify right side
    222,054.32x = 27,293,903,788.04
  5. Step 5: Solve for x
    x = 27,293,903,788.04/222,054.32
  6. Step 6: Final answer
    x = 122,915.44

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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.