Home / 479,202.48-661,511.92-309,519.36

Finding the Fourth Proportional to 479,202.48, 661,511.92 and 309,519.36

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Solution

The fourth proportional to 479,202.48, 661,511.92 and 309,519.36 is: 427,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,202.48 : 661,511.92 = 309,519.36 : x
  2. Step 2: Convert to fraction form
    479,202.48/661,511.92 = 309,519.36/x
  3. Step 3: Cross multiply
    479,202.48x = 661,511.92 × 309,519.36
  4. Step 4: Simplify right side
    479,202.48x = 204,750,746,110.77
  5. Step 5: Solve for x
    x = 204,750,746,110.77/479,202.48
  6. Step 6: Final answer
    x = 427,273.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.