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Finding the Fourth Proportional to 222,393.92, 306,899.22 and 126,885.20

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Solution

The fourth proportional to 222,393.92, 306,899.22 and 126,885.20 is: 175,099.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,393.92 : 306,899.22 = 126,885.20 : x
  2. Step 2: Convert to fraction form
    222,393.92/306,899.22 = 126,885.20/x
  3. Step 3: Cross multiply
    222,393.92x = 306,899.22 × 126,885.20
  4. Step 4: Simplify right side
    222,393.92x = 38,940,968,909.54
  5. Step 5: Solve for x
    x = 38,940,968,909.54/222,393.92
  6. Step 6: Final answer
    x = 175,099.07

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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.