Home / 280,001.10-419,999.67-80,321.70

Finding the Fourth Proportional to 280,001.10, 419,999.67 and 80,321.70

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Solution

The fourth proportional to 280,001.10, 419,999.67 and 80,321.70 is: 120,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,001.10 : 419,999.67 = 80,321.70 : x
  2. Step 2: Convert to fraction form
    280,001.10/419,999.67 = 80,321.70/x
  3. Step 3: Cross multiply
    280,001.10x = 419,999.67 × 80,321.70
  4. Step 4: Simplify right side
    280,001.10x = 33,735,087,493.84
  5. Step 5: Solve for x
    x = 33,735,087,493.84/280,001.10
  6. Step 6: Final answer
    x = 120,481.98

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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.