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Finding the Fourth Proportional to 501,879.36, 753,014.88 and 221,198.88

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Solution

The fourth proportional to 501,879.36, 753,014.88 and 221,198.88 is: 331,884.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,879.36 : 753,014.88 = 221,198.88 : x
  2. Step 2: Convert to fraction form
    501,879.36/753,014.88 = 221,198.88/x
  3. Step 3: Cross multiply
    501,879.36x = 753,014.88 × 221,198.88
  4. Step 4: Simplify right side
    501,879.36x = 166,566,048,079.33
  5. Step 5: Solve for x
    x = 166,566,048,079.33/501,879.36
  6. Step 6: Final answer
    x = 331,884.63

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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.