Home / 231,821,478.20-347,732,217.30-207,635,007.80

Finding the Fourth Proportional to 231,821,478.20, 347,732,217.30 and 207,635,007.80

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Solution

The fourth proportional to 231,821,478.20, 347,732,217.30 and 207,635,007.80 is: 311,452,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,821,478.20 : 347,732,217.30 = 207,635,007.80 : x
  2. Step 2: Convert to fraction form
    231,821,478.20/347,732,217.30 = 207,635,007.80/x
  3. Step 3: Cross multiply
    231,821,478.20x = 347,732,217.30 × 207,635,007.80
  4. Step 4: Simplify right side
    231,821,478.20x = 72,201,381,651,396,800
  5. Step 5: Solve for x
    x = 72,201,381,651,396,800/231,821,478.20
  6. Step 6: Final answer
    x = 311,452,511.70

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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.