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Finding the Fourth Proportional to 222,417.99, 306,958.78 and 126,938.97

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Solution

The fourth proportional to 222,417.99, 306,958.78 and 126,938.97 is: 175,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,417.99 : 306,958.78 = 126,938.97 : x
  2. Step 2: Convert to fraction form
    222,417.99/306,958.78 = 126,938.97/x
  3. Step 3: Cross multiply
    222,417.99x = 306,958.78 × 126,938.97
  4. Step 4: Simplify right side
    222,417.99x = 38,965,031,365.66
  5. Step 5: Solve for x
    x = 38,965,031,365.66/222,417.99
  6. Step 6: Final answer
    x = 175,188.31

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1.5x scale

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.