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Finding the Fourth Proportional to 312,563.97, 431,338.48 and 169,324.58

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Solution

The fourth proportional to 312,563.97, 431,338.48 and 169,324.58 is: 233,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,563.97 : 431,338.48 = 169,324.58 : x
  2. Step 2: Convert to fraction form
    312,563.97/431,338.48 = 169,324.58/x
  3. Step 3: Cross multiply
    312,563.97x = 431,338.48 × 169,324.58
  4. Step 4: Simplify right side
    312,563.97x = 73,036,206,963.84
  5. Step 5: Solve for x
    x = 73,036,206,963.84/312,563.97
  6. Step 6: Final answer
    x = 233,668.03

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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.