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Finding the Fourth Proportional to 305,955.45, 422,158.91 and 178,636.41

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Solution

The fourth proportional to 305,955.45, 422,158.91 and 178,636.41 is: 246,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,955.45 : 422,158.91 = 178,636.41 : x
  2. Step 2: Convert to fraction form
    305,955.45/422,158.91 = 178,636.41/x
  3. Step 3: Cross multiply
    305,955.45x = 422,158.91 × 178,636.41
  4. Step 4: Simplify right side
    305,955.45x = 75,412,951,238.73
  5. Step 5: Solve for x
    x = 75,412,951,238.73/305,955.45
  6. Step 6: Final answer
    x = 246,483.44

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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.