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Finding the Fourth Proportional to 205,951,805.70, 308,927,708.55 and 108,870,000.90

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Solution

The fourth proportional to 205,951,805.70, 308,927,708.55 and 108,870,000.90 is: 163,305,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,951,805.70 : 308,927,708.55 = 108,870,000.90 : x
  2. Step 2: Convert to fraction form
    205,951,805.70/308,927,708.55 = 108,870,000.90/x
  3. Step 3: Cross multiply
    205,951,805.70x = 308,927,708.55 × 108,870,000.90
  4. Step 4: Simplify right side
    205,951,805.70x = 33,632,959,907,873,440
  5. Step 5: Solve for x
    x = 33,632,959,907,873,440/205,951,805.70
  6. Step 6: Final answer
    x = 163,305,001.35

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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.