Home / 387,766.20-580,266.90-268,879.80

Finding the Fourth Proportional to 387,766.20, 580,266.90 and 268,879.80

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Solution

The fourth proportional to 387,766.20, 580,266.90 and 268,879.80 is: 402,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,766.20 : 580,266.90 = 268,879.80 : x
  2. Step 2: Convert to fraction form
    387,766.20/580,266.90 = 268,879.80/x
  3. Step 3: Cross multiply
    387,766.20x = 580,266.90 × 268,879.80
  4. Step 4: Simplify right side
    387,766.20x = 156,022,048,018.62
  5. Step 5: Solve for x
    x = 156,022,048,018.62/387,766.20
  6. Step 6: Final answer
    x = 402,361.13

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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.