Home / 312,629.01-431,425.20-169,388.61

Finding the Fourth Proportional to 312,629.01, 431,425.20 and 169,388.61

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Solution

The fourth proportional to 312,629.01, 431,425.20 and 169,388.61 is: 233,754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,629.01 : 431,425.20 = 169,388.61 : x
  2. Step 2: Convert to fraction form
    312,629.01/431,425.20 = 169,388.61/x
  3. Step 3: Cross multiply
    312,629.01x = 431,425.20 × 169,388.61
  4. Step 4: Simplify right side
    312,629.01x = 73,078,514,946.97
  5. Step 5: Solve for x
    x = 73,078,514,946.97/312,629.01
  6. Step 6: Final answer
    x = 233,754.75

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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.