Home / 285,121,273.12-393,467,520.56-154,741,081.12

Finding the Fourth Proportional to 285,121,273.12, 393,467,520.56 and 154,741,081.12

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Solution

The fourth proportional to 285,121,273.12, 393,467,520.56 and 154,741,081.12 is: 213,542,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,121,273.12 : 393,467,520.56 = 154,741,081.12 : x
  2. Step 2: Convert to fraction form
    285,121,273.12/393,467,520.56 = 154,741,081.12/x
  3. Step 3: Cross multiply
    285,121,273.12x = 393,467,520.56 × 154,741,081.12
  4. Step 4: Simplify right side
    285,121,273.12x = 60,885,589,517,060,232
  5. Step 5: Solve for x
    x = 60,885,589,517,060,232/285,121,273.12
  6. Step 6: Final answer
    x = 213,542,780.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.