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Finding the Fourth Proportional to 281,644.80, 422,620.80 and 115,449.60

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Solution

The fourth proportional to 281,644.80, 422,620.80 and 115,449.60 is: 173,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,644.80 : 422,620.80 = 115,449.60 : x
  2. Step 2: Convert to fraction form
    281,644.80/422,620.80 = 115,449.60/x
  3. Step 3: Cross multiply
    281,644.80x = 422,620.80 × 115,449.60
  4. Step 4: Simplify right side
    281,644.80x = 48,791,402,311.68
  5. Step 5: Solve for x
    x = 48,791,402,311.68/281,644.80
  6. Step 6: Final answer
    x = 173,237.36

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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.