Home / 386,469.29-579,743.70-133,749.33

Finding the Fourth Proportional to 386,469.29, 579,743.70 and 133,749.33

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Solution

The fourth proportional to 386,469.29, 579,743.70 and 133,749.33 is: 200,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,469.29 : 579,743.70 = 133,749.33 : x
  2. Step 2: Convert to fraction form
    386,469.29/579,743.70 = 133,749.33/x
  3. Step 3: Cross multiply
    386,469.29x = 579,743.70 × 133,749.33
  4. Step 4: Simplify right side
    386,469.29x = 77,540,328,771.12
  5. Step 5: Solve for x
    x = 77,540,328,771.12/386,469.29
  6. Step 6: Final answer
    x = 200,637.75

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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.