Home / 256,501,470.80-384,992,743.80-135,419,819.60

Finding the Fourth Proportional to 256,501,470.80, 384,992,743.80 and 135,419,819.60

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Solution

The fourth proportional to 256,501,470.80, 384,992,743.80 and 135,419,819.60 is: 203,256,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,501,470.80 : 384,992,743.80 = 135,419,819.60 : x
  2. Step 2: Convert to fraction form
    256,501,470.80/384,992,743.80 = 135,419,819.60/x
  3. Step 3: Cross multiply
    256,501,470.80x = 384,992,743.80 × 135,419,819.60
  4. Step 4: Simplify right side
    256,501,470.80x = 52,135,647,912,705,016
  5. Step 5: Solve for x
    x = 52,135,647,912,705,016/256,501,470.80
  6. Step 6: Final answer
    x = 203,256,721.10

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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.