Home / 215,571,963.87-297,489,016.17-122,752,471.41

Finding the Fourth Proportional to 215,571,963.87, 297,489,016.17 and 122,752,471.41

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Solution

The fourth proportional to 215,571,963.87, 297,489,016.17 and 122,752,471.41 is: 169,398,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,571,963.87 : 297,489,016.17 = 122,752,471.41 : x
  2. Step 2: Convert to fraction form
    215,571,963.87/297,489,016.17 = 122,752,471.41/x
  3. Step 3: Cross multiply
    215,571,963.87x = 297,489,016.17 × 122,752,471.41
  4. Step 4: Simplify right side
    215,571,963.87x = 36,517,511,952,196,952
  5. Step 5: Solve for x
    x = 36,517,511,952,196,952/215,571,963.87
  6. Step 6: Final answer
    x = 169,398,243.15

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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.