Home / 680,091.85-1,020,194.88-206,781.31

Finding the Fourth Proportional to 680,091.85, 1,020,194.88 and 206,781.31

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Solution

The fourth proportional to 680,091.85, 1,020,194.88 and 206,781.31 is: 310,189.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,091.85 : 1,020,194.88 = 206,781.31 : x
  2. Step 2: Convert to fraction form
    680,091.85/1,020,194.88 = 206,781.31/x
  3. Step 3: Cross multiply
    680,091.85x = 1,020,194.88 × 206,781.31
  4. Step 4: Simplify right side
    680,091.85x = 210,957,233,741.69
  5. Step 5: Solve for x
    x = 210,957,233,741.69/680,091.85
  6. Step 6: Final answer
    x = 310,189.33

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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.