Home / 280,026.12-419,999.76-80,363.64

Finding the Fourth Proportional to 280,026.12, 419,999.76 and 80,363.64

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Solution

The fourth proportional to 280,026.12, 419,999.76 and 80,363.64 is: 120,534.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,026.12 : 419,999.76 = 80,363.64 : x
  2. Step 2: Convert to fraction form
    280,026.12/419,999.76 = 80,363.64/x
  3. Step 3: Cross multiply
    280,026.12x = 419,999.76 × 80,363.64
  4. Step 4: Simplify right side
    280,026.12x = 33,752,709,512.73
  5. Step 5: Solve for x
    x = 33,752,709,512.73/280,026.12
  6. Step 6: Final answer
    x = 120,534.15

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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.