Home / 279,399,021.80-419,098,532.70-211,374,573.80

Finding the Fourth Proportional to 279,399,021.80, 419,098,532.70 and 211,374,573.80

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Solution

The fourth proportional to 279,399,021.80, 419,098,532.70 and 211,374,573.80 is: 317,061,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,399,021.80 : 419,098,532.70 = 211,374,573.80 : x
  2. Step 2: Convert to fraction form
    279,399,021.80/419,098,532.70 = 211,374,573.80/x
  3. Step 3: Cross multiply
    279,399,021.80x = 419,098,532.70 × 211,374,573.80
  4. Step 4: Simplify right side
    279,399,021.80x = 88,586,773,729,667,872
  5. Step 5: Solve for x
    x = 88,586,773,729,667,872/279,399,021.80
  6. Step 6: Final answer
    x = 317,061,860.70

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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.