Home / 388,044,491.80-582,147,608.10-129,340,082.20

Finding the Fourth Proportional to 388,044,491.80, 582,147,608.10 and 129,340,082.20

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Solution

The fourth proportional to 388,044,491.80, 582,147,608.10 and 129,340,082.20 is: 194,037,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,044,491.80 : 582,147,608.10 = 129,340,082.20 : x
  2. Step 2: Convert to fraction form
    388,044,491.80/582,147,608.10 = 129,340,082.20/x
  3. Step 3: Cross multiply
    388,044,491.80x = 582,147,608.10 × 129,340,082.20
  4. Step 4: Simplify right side
    388,044,491.80x = 75,295,019,484,187,392
  5. Step 5: Solve for x
    x = 75,295,019,484,187,392/388,044,491.80
  6. Step 6: Final answer
    x = 194,037,078.42

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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.