Home / 279,944.74-419,938.17-80,263.54

Finding the Fourth Proportional to 279,944.74, 419,938.17 and 80,263.54

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Solution

The fourth proportional to 279,944.74, 419,938.17 and 80,263.54 is: 120,401.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,944.74 : 419,938.17 = 80,263.54 : x
  2. Step 2: Convert to fraction form
    279,944.74/419,938.17 = 80,263.54/x
  3. Step 3: Cross multiply
    279,944.74x = 419,938.17 × 80,263.54
  4. Step 4: Simplify right side
    279,944.74x = 33,705,724,105.32
  5. Step 5: Solve for x
    x = 33,705,724,105.32/279,944.74
  6. Step 6: Final answer
    x = 120,401.35

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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.