Home / 207,578.40-311,367.88-57,819.12

Finding the Fourth Proportional to 207,578.40, 311,367.88 and 57,819.12

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Solution

The fourth proportional to 207,578.40, 311,367.88 and 57,819.12 is: 86,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,578.40 : 311,367.88 = 57,819.12 : x
  2. Step 2: Convert to fraction form
    207,578.40/311,367.88 = 57,819.12/x
  3. Step 3: Cross multiply
    207,578.40x = 311,367.88 × 57,819.12
  4. Step 4: Simplify right side
    207,578.40x = 18,003,016,817.87
  5. Step 5: Solve for x
    x = 18,003,016,817.87/207,578.40
  6. Step 6: Final answer
    x = 86,728.76

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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.