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Finding the Fourth Proportional to 205,951,807.70, 308,927,711.55 and 108,870,002.90

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Solution

The fourth proportional to 205,951,807.70, 308,927,711.55 and 108,870,002.90 is: 163,305,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,951,807.70 : 308,927,711.55 = 108,870,002.90 : x
  2. Step 2: Convert to fraction form
    205,951,807.70/308,927,711.55 = 108,870,002.90/x
  3. Step 3: Cross multiply
    205,951,807.70x = 308,927,711.55 × 108,870,002.90
  4. Step 4: Simplify right side
    205,951,807.70x = 33,632,960,852,338,868
  5. Step 5: Solve for x
    x = 33,632,960,852,338,868/205,951,807.70
  6. Step 6: Final answer
    x = 163,305,004.35

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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.