Home / 408,001.22-612,105.66-239,663.90

Finding the Fourth Proportional to 408,001.22, 612,105.66 and 239,663.90

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Solution

The fourth proportional to 408,001.22, 612,105.66 and 239,663.90 is: 359,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,001.22 : 612,105.66 = 239,663.90 : x
  2. Step 2: Convert to fraction form
    408,001.22/612,105.66 = 239,663.90/x
  3. Step 3: Cross multiply
    408,001.22x = 612,105.66 × 239,663.90
  4. Step 4: Simplify right side
    408,001.22x = 146,699,629,687.67
  5. Step 5: Solve for x
    x = 146,699,629,687.67/408,001.22
  6. Step 6: Final answer
    x = 359,556.84

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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.