Home / 279,939.51-419,823.14-80,206.34

Finding the Fourth Proportional to 279,939.51, 419,823.14 and 80,206.34

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Solution

The fourth proportional to 279,939.51, 419,823.14 and 80,206.34 is: 120,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939.51 : 419,823.14 = 80,206.34 : x
  2. Step 2: Convert to fraction form
    279,939.51/419,823.14 = 80,206.34/x
  3. Step 3: Cross multiply
    279,939.51x = 419,823.14 × 80,206.34
  4. Step 4: Simplify right side
    279,939.51x = 33,672,475,006.56
  5. Step 5: Solve for x
    x = 33,672,475,006.56/279,939.51
  6. Step 6: Final answer
    x = 120,284.83

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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.