Home / 312,721.95-431,556.15-169,481.97

Finding the Fourth Proportional to 312,721.95, 431,556.15 and 169,481.97

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Solution

The fourth proportional to 312,721.95, 431,556.15 and 169,481.97 is: 233,885.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,721.95 : 431,556.15 = 169,481.97 : x
  2. Step 2: Convert to fraction form
    312,721.95/431,556.15 = 169,481.97/x
  3. Step 3: Cross multiply
    312,721.95x = 431,556.15 × 169,481.97
  4. Step 4: Simplify right side
    312,721.95x = 73,140,986,467.62
  5. Step 5: Solve for x
    x = 73,140,986,467.62/312,721.95
  6. Step 6: Final answer
    x = 233,885.04

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1.5x scale

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.