Home / 408,239.30-611,208.75-308,081.18

Finding the Fourth Proportional to 408,239.30, 611,208.75 and 308,081.18

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Solution

The fourth proportional to 408,239.30, 611,208.75 and 308,081.18 is: 461,253.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,239.30 : 611,208.75 = 308,081.18 : x
  2. Step 2: Convert to fraction form
    408,239.30/611,208.75 = 308,081.18/x
  3. Step 3: Cross multiply
    408,239.30x = 611,208.75 × 308,081.18
  4. Step 4: Simplify right side
    408,239.30x = 188,301,912,926.33
  5. Step 5: Solve for x
    x = 188,301,912,926.33/408,239.30
  6. Step 6: Final answer
    x = 461,253.76

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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.