Home / 320,930.88-442,615.56-206,228.16

Finding the Fourth Proportional to 320,930.88, 442,615.56 and 206,228.16

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Solution

The fourth proportional to 320,930.88, 442,615.56 and 206,228.16 is: 284,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,930.88 : 442,615.56 = 206,228.16 : x
  2. Step 2: Convert to fraction form
    320,930.88/442,615.56 = 206,228.16/x
  3. Step 3: Cross multiply
    320,930.88x = 442,615.56 × 206,228.16
  4. Step 4: Simplify right side
    320,930.88x = 91,279,792,526.17
  5. Step 5: Solve for x
    x = 91,279,792,526.17/320,930.88
  6. Step 6: Final answer
    x = 284,421.97

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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.