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Finding the Fourth Proportional to 270,481.20, 405,635.40 and 112,671.60

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Solution

The fourth proportional to 270,481.20, 405,635.40 and 112,671.60 is: 168,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,481.20 : 405,635.40 = 112,671.60 : x
  2. Step 2: Convert to fraction form
    270,481.20/405,635.40 = 112,671.60/x
  3. Step 3: Cross multiply
    270,481.20x = 405,635.40 × 112,671.60
  4. Step 4: Simplify right side
    270,481.20x = 45,703,589,534.64
  5. Step 5: Solve for x
    x = 45,703,589,534.64/270,481.20
  6. Step 6: Final answer
    x = 168,971.41

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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.