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Finding the Fourth Proportional to 222,367.87, 306,864.61 and 121,765.87

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Solution

The fourth proportional to 222,367.87, 306,864.61 and 121,765.87 is: 168,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,367.87 : 306,864.61 = 121,765.87 : x
  2. Step 2: Convert to fraction form
    222,367.87/306,864.61 = 121,765.87/x
  3. Step 3: Cross multiply
    222,367.87x = 306,864.61 × 121,765.87
  4. Step 4: Simplify right side
    222,367.87x = 37,365,636,208.86
  5. Step 5: Solve for x
    x = 37,365,636,208.86/222,367.87
  6. Step 6: Final answer
    x = 168,035.23

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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.