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Finding the Fourth Proportional to 222,396, 306,907.44 and 121,795.68

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Solution

The fourth proportional to 222,396, 306,907.44 and 121,795.68 is: 168,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,396 : 306,907.44 = 121,795.68 : x
  2. Step 2: Convert to fraction form
    222,396/306,907.44 = 121,795.68/x
  3. Step 3: Cross multiply
    222,396x = 306,907.44 × 121,795.68
  4. Step 4: Simplify right side
    222,396x = 37,380,000,351.86
  5. Step 5: Solve for x
    x = 37,380,000,351.86/222,396
  6. Step 6: Final answer
    x = 168,078.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.