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Finding the Fourth Proportional to 606,288.78, 909,182.94 and 206,961.75

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Solution

The fourth proportional to 606,288.78, 909,182.94 and 206,961.75 is: 310,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,288.78 : 909,182.94 = 206,961.75 : x
  2. Step 2: Convert to fraction form
    606,288.78/909,182.94 = 206,961.75/x
  3. Step 3: Cross multiply
    606,288.78x = 909,182.94 × 206,961.75
  4. Step 4: Simplify right side
    606,288.78x = 188,166,087,786.63
  5. Step 5: Solve for x
    x = 188,166,087,786.63/606,288.78
  6. Step 6: Final answer
    x = 310,357.20

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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.