Home / 387,072,942.80-580,609,414.20-131,771,310.80

Finding the Fourth Proportional to 387,072,942.80, 580,609,414.20 and 131,771,310.80

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Solution

The fourth proportional to 387,072,942.80, 580,609,414.20 and 131,771,310.80 is: 197,656,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,072,942.80 : 580,609,414.20 = 131,771,310.80 : x
  2. Step 2: Convert to fraction form
    387,072,942.80/580,609,414.20 = 131,771,310.80/x
  3. Step 3: Cross multiply
    387,072,942.80x = 580,609,414.20 × 131,771,310.80
  4. Step 4: Simplify right side
    387,072,942.80x = 76,507,663,571,954,144
  5. Step 5: Solve for x
    x = 76,507,663,571,954,144/387,072,942.80
  6. Step 6: Final answer
    x = 197,656,966.20

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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.