Home / 258,747,467.20-388,121,200.80-129,375,044.80

Finding the Fourth Proportional to 258,747,467.20, 388,121,200.80 and 129,375,044.80

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Solution

The fourth proportional to 258,747,467.20, 388,121,200.80 and 129,375,044.80 is: 194,062,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,747,467.20 : 388,121,200.80 = 129,375,044.80 : x
  2. Step 2: Convert to fraction form
    258,747,467.20/388,121,200.80 = 129,375,044.80/x
  3. Step 3: Cross multiply
    258,747,467.20x = 388,121,200.80 × 129,375,044.80
  4. Step 4: Simplify right side
    258,747,467.20x = 50,213,197,741,329,800
  5. Step 5: Solve for x
    x = 50,213,197,741,329,800/258,747,467.20
  6. Step 6: Final answer
    x = 194,062,567.20

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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.