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Finding the Fourth Proportional to 222,417.74, 306,958.56 and 126,938.90

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Solution

The fourth proportional to 222,417.74, 306,958.56 and 126,938.90 is: 175,188.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,417.74 : 306,958.56 = 126,938.90 : x
  2. Step 2: Convert to fraction form
    222,417.74/306,958.56 = 126,938.90/x
  3. Step 3: Cross multiply
    222,417.74x = 306,958.56 × 126,938.90
  4. Step 4: Simplify right side
    222,417.74x = 38,964,981,951.98
  5. Step 5: Solve for x
    x = 38,964,981,951.98/222,417.74
  6. Step 6: Final answer
    x = 175,188.28

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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.