Home / 387,212.20-580,847.10-137,861.80

Finding the Fourth Proportional to 387,212.20, 580,847.10 and 137,861.80

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Solution

The fourth proportional to 387,212.20, 580,847.10 and 137,861.80 is: 206,802.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,212.20 : 580,847.10 = 137,861.80 : x
  2. Step 2: Convert to fraction form
    387,212.20/580,847.10 = 137,861.80/x
  3. Step 3: Cross multiply
    387,212.20x = 580,847.10 × 137,861.80
  4. Step 4: Simplify right side
    387,212.20x = 80,076,626,730.78
  5. Step 5: Solve for x
    x = 80,076,626,730.78/387,212.20
  6. Step 6: Final answer
    x = 206,802.95

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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.