Home / 207,666,280.80-311,279,758.56-78,217,882.56

Finding the Fourth Proportional to 207,666,280.80, 311,279,758.56 and 78,217,882.56

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Solution

The fourth proportional to 207,666,280.80, 311,279,758.56 and 78,217,882.56 is: 117,244,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,666,280.80 : 311,279,758.56 = 78,217,882.56 : x
  2. Step 2: Convert to fraction form
    207,666,280.80/311,279,758.56 = 78,217,882.56/x
  3. Step 3: Cross multiply
    207,666,280.80x = 311,279,758.56 × 78,217,882.56
  4. Step 4: Simplify right side
    207,666,280.80x = 24,347,643,598,351,236
  5. Step 5: Solve for x
    x = 24,347,643,598,351,236/207,666,280.80
  6. Step 6: Final answer
    x = 117,244,087.51

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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.