Home / 312,972.21-431,902.13-169,731.27

Finding the Fourth Proportional to 312,972.21, 431,902.13 and 169,731.27

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Solution

The fourth proportional to 312,972.21, 431,902.13 and 169,731.27 is: 234,229.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,972.21 : 431,902.13 = 169,731.27 : x
  2. Step 2: Convert to fraction form
    312,972.21/431,902.13 = 169,731.27/x
  3. Step 3: Cross multiply
    312,972.21x = 431,902.13 × 169,731.27
  4. Step 4: Simplify right side
    312,972.21x = 73,307,296,191.95
  5. Step 5: Solve for x
    x = 73,307,296,191.95/312,972.21
  6. Step 6: Final answer
    x = 234,229.41

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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.