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Finding the Fourth Proportional to 405,067.20, 607,309.20 and 227,628.60

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Solution

The fourth proportional to 405,067.20, 607,309.20 and 227,628.60 is: 341,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,067.20 : 607,309.20 = 227,628.60 : x
  2. Step 2: Convert to fraction form
    405,067.20/607,309.20 = 227,628.60/x
  3. Step 3: Cross multiply
    405,067.20x = 607,309.20 × 227,628.60
  4. Step 4: Simplify right side
    405,067.20x = 138,240,942,963.12
  5. Step 5: Solve for x
    x = 138,240,942,963.12/405,067.20
  6. Step 6: Final answer
    x = 341,279.03

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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.