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Finding the Fourth Proportional to 204,727.80, 307,091.70 and 71,563.80

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Solution

The fourth proportional to 204,727.80, 307,091.70 and 71,563.80 is: 107,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,727.80 : 307,091.70 = 71,563.80 : x
  2. Step 2: Convert to fraction form
    204,727.80/307,091.70 = 71,563.80/x
  3. Step 3: Cross multiply
    204,727.80x = 307,091.70 × 71,563.80
  4. Step 4: Simplify right side
    204,727.80x = 21,976,649,000.46
  5. Step 5: Solve for x
    x = 21,976,649,000.46/204,727.80
  6. Step 6: Final answer
    x = 107,345.70

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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.