Home / 399,556.68-551,405-229,790.96

Finding the Fourth Proportional to 399,556.68, 551,405 and 229,790.96

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Solution

The fourth proportional to 399,556.68, 551,405 and 229,790.96 is: 317,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,556.68 : 551,405 = 229,790.96 : x
  2. Step 2: Convert to fraction form
    399,556.68/551,405 = 229,790.96/x
  3. Step 3: Cross multiply
    399,556.68x = 551,405 × 229,790.96
  4. Step 4: Simplify right side
    399,556.68x = 126,707,884,298.80
  5. Step 5: Solve for x
    x = 126,707,884,298.80/399,556.68
  6. Step 6: Final answer
    x = 317,121.18

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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.