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Finding the Fourth Proportional to 281,339.96, 422,245.98 and 263,605.21

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Solution

The fourth proportional to 281,339.96, 422,245.98 and 263,605.21 is: 395,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,339.96 : 422,245.98 = 263,605.21 : x
  2. Step 2: Convert to fraction form
    281,339.96/422,245.98 = 263,605.21/x
  3. Step 3: Cross multiply
    281,339.96x = 422,245.98 × 263,605.21
  4. Step 4: Simplify right side
    281,339.96x = 111,306,239,173.94
  5. Step 5: Solve for x
    x = 111,306,239,173.94/281,339.96
  6. Step 6: Final answer
    x = 395,628.98

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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.