Home / 387,951,555.11-582,003,992.54-142,310,470.73

Finding the Fourth Proportional to 387,951,555.11, 582,003,992.54 and 142,310,470.73

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Solution

The fourth proportional to 387,951,555.11, 582,003,992.54 and 142,310,470.73 is: 213,493,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,951,555.11 : 582,003,992.54 = 142,310,470.73 : x
  2. Step 2: Convert to fraction form
    387,951,555.11/582,003,992.54 = 142,310,470.73/x
  3. Step 3: Cross multiply
    387,951,555.11x = 582,003,992.54 × 142,310,470.73
  4. Step 4: Simplify right side
    387,951,555.11x = 82,825,262,142,552,560
  5. Step 5: Solve for x
    x = 82,825,262,142,552,560/387,951,555.11
  6. Step 6: Final answer
    x = 213,493,826.88

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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.