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Finding the Fourth Proportional to 239,151.75, 330,044.39 and 131,721.75

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Solution

The fourth proportional to 239,151.75, 330,044.39 and 131,721.75 is: 181,784.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,151.75 : 330,044.39 = 131,721.75 : x
  2. Step 2: Convert to fraction form
    239,151.75/330,044.39 = 131,721.75/x
  3. Step 3: Cross multiply
    239,151.75x = 330,044.39 × 131,721.75
  4. Step 4: Simplify right side
    239,151.75x = 43,474,023,969.87
  5. Step 5: Solve for x
    x = 43,474,023,969.87/239,151.75
  6. Step 6: Final answer
    x = 181,784.26

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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.