Home / 399,623.33-551,517.66-218,362.13

Finding the Fourth Proportional to 399,623.33, 551,517.66 and 218,362.13

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Solution

The fourth proportional to 399,623.33, 551,517.66 and 218,362.13 is: 301,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,623.33 : 551,517.66 = 218,362.13 : x
  2. Step 2: Convert to fraction form
    399,623.33/551,517.66 = 218,362.13/x
  3. Step 3: Cross multiply
    399,623.33x = 551,517.66 × 218,362.13
  4. Step 4: Simplify right side
    399,623.33x = 120,430,568,535.78
  5. Step 5: Solve for x
    x = 120,430,568,535.78/399,623.33
  6. Step 6: Final answer
    x = 301,360.20

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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.