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Finding the Fourth Proportional to 230,309.40, 345,464.10 and 80,499.90

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Solution

The fourth proportional to 230,309.40, 345,464.10 and 80,499.90 is: 120,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,309.40 : 345,464.10 = 80,499.90 : x
  2. Step 2: Convert to fraction form
    230,309.40/345,464.10 = 80,499.90/x
  3. Step 3: Cross multiply
    230,309.40x = 345,464.10 × 80,499.90
  4. Step 4: Simplify right side
    230,309.40x = 27,809,825,503.59
  5. Step 5: Solve for x
    x = 27,809,825,503.59/230,309.40
  6. Step 6: Final answer
    x = 120,749.85

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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.