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Finding the Fourth Proportional to 222,417.49, 306,958.09 and 126,938.47

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Solution

The fourth proportional to 222,417.49, 306,958.09 and 126,938.47 is: 175,187.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,417.49 : 306,958.09 = 126,938.47 : x
  2. Step 2: Convert to fraction form
    222,417.49/306,958.09 = 126,938.47/x
  3. Step 3: Cross multiply
    222,417.49x = 306,958.09 × 126,938.47
  4. Step 4: Simplify right side
    222,417.49x = 38,964,790,298.72
  5. Step 5: Solve for x
    x = 38,964,790,298.72/222,417.49
  6. Step 6: Final answer
    x = 175,187.62

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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.