Home / 312,629.51-431,425.89-169,389.11

Finding the Fourth Proportional to 312,629.51, 431,425.89 and 169,389.11

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Solution

The fourth proportional to 312,629.51, 431,425.89 and 169,389.11 is: 233,755.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,629.51 : 431,425.89 = 169,389.11 : x
  2. Step 2: Convert to fraction form
    312,629.51/431,425.89 = 169,389.11/x
  3. Step 3: Cross multiply
    312,629.51x = 431,425.89 × 169,389.11
  4. Step 4: Simplify right side
    312,629.51x = 73,078,845,380.93
  5. Step 5: Solve for x
    x = 73,078,845,380.93/312,629.51
  6. Step 6: Final answer
    x = 233,755.43

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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.