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Finding the Fourth Proportional to 281,632.60, 422,310.66 and 139,313.44

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Solution

The fourth proportional to 281,632.60, 422,310.66 and 139,313.44 is: 208,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,632.60 : 422,310.66 = 139,313.44 : x
  2. Step 2: Convert to fraction form
    281,632.60/422,310.66 = 139,313.44/x
  3. Step 3: Cross multiply
    281,632.60x = 422,310.66 × 139,313.44
  4. Step 4: Simplify right side
    281,632.60x = 58,833,550,793.27
  5. Step 5: Solve for x
    x = 58,833,550,793.27/281,632.60
  6. Step 6: Final answer
    x = 208,901.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.