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Finding the Fourth Proportional to 205,951,808.70, 308,927,713.05 and 108,870,003.90

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Solution

The fourth proportional to 205,951,808.70, 308,927,713.05 and 108,870,003.90 is: 163,305,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,951,808.70 : 308,927,713.05 = 108,870,003.90 : x
  2. Step 2: Convert to fraction form
    205,951,808.70/308,927,713.05 = 108,870,003.90/x
  3. Step 3: Cross multiply
    205,951,808.70x = 308,927,713.05 × 108,870,003.90
  4. Step 4: Simplify right side
    205,951,808.70x = 33,632,961,324,571,584
  5. Step 5: Solve for x
    x = 33,632,961,324,571,584/205,951,808.70
  6. Step 6: Final answer
    x = 163,305,005.85

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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.