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Finding the Fourth Proportional to 239,151.80, 330,044.45 and 131,721.81

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Solution

The fourth proportional to 239,151.80, 330,044.45 and 131,721.81 is: 181,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,151.80 : 330,044.45 = 131,721.81 : x
  2. Step 2: Convert to fraction form
    239,151.80/330,044.45 = 131,721.81/x
  3. Step 3: Cross multiply
    239,151.80x = 330,044.45 × 131,721.81
  4. Step 4: Simplify right side
    239,151.80x = 43,474,051,675.85
  5. Step 5: Solve for x
    x = 43,474,051,675.85/239,151.80
  6. Step 6: Final answer
    x = 181,784.34

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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.