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Finding the Fourth Proportional to 539,344.20, 809,016.30 and 165,318.60

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Solution

The fourth proportional to 539,344.20, 809,016.30 and 165,318.60 is: 247,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,344.20 : 809,016.30 = 165,318.60 : x
  2. Step 2: Convert to fraction form
    539,344.20/809,016.30 = 165,318.60/x
  3. Step 3: Cross multiply
    539,344.20x = 809,016.30 × 165,318.60
  4. Step 4: Simplify right side
    539,344.20x = 133,745,442,093.18
  5. Step 5: Solve for x
    x = 133,745,442,093.18/539,344.20
  6. Step 6: Final answer
    x = 247,977.90

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Similar ratio
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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.