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Finding the Fourth Proportional to 206,786.30, 310,009.96 and 73,590.71

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Solution

The fourth proportional to 206,786.30, 310,009.96 and 73,590.71 is: 110,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,786.30 : 310,009.96 = 73,590.71 : x
  2. Step 2: Convert to fraction form
    206,786.30/310,009.96 = 73,590.71/x
  3. Step 3: Cross multiply
    206,786.30x = 310,009.96 × 73,590.71
  4. Step 4: Simplify right side
    206,786.30x = 22,813,853,930.48
  5. Step 5: Solve for x
    x = 22,813,853,930.48/206,786.30
  6. Step 6: Final answer
    x = 110,325.75

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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.