Home / 419,236,280.80-628,382,029.20-200,991,176.80

Finding the Fourth Proportional to 419,236,280.80, 628,382,029.20 and 200,991,176.80

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Solution

The fourth proportional to 419,236,280.80, 628,382,029.20 and 200,991,176.80 is: 301,260,289.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,236,280.80 : 628,382,029.20 = 200,991,176.80 : x
  2. Step 2: Convert to fraction form
    419,236,280.80/628,382,029.20 = 200,991,176.80/x
  3. Step 3: Cross multiply
    419,236,280.80x = 628,382,029.20 × 200,991,176.80
  4. Step 4: Simplify right side
    419,236,280.80x = 126,299,243,528,879,984
  5. Step 5: Solve for x
    x = 126,299,243,528,879,984/419,236,280.80
  6. Step 6: Final answer
    x = 301,260,289.99

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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.