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Finding the Fourth Proportional to 606,286.78, 909,179.98 and 206,959.75

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Solution

The fourth proportional to 606,286.78, 909,179.98 and 206,959.75 is: 310,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,286.78 : 909,179.98 = 206,959.75 : x
  2. Step 2: Convert to fraction form
    606,286.78/909,179.98 = 206,959.75/x
  3. Step 3: Cross multiply
    606,286.78x = 909,179.98 × 206,959.75
  4. Step 4: Simplify right side
    606,286.78x = 188,163,661,365.81
  5. Step 5: Solve for x
    x = 188,163,661,365.81/606,286.78
  6. Step 6: Final answer
    x = 310,354.22

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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.