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Finding the Fourth Proportional to 239,933.51, 360,121.71 and 121,687.91

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Solution

The fourth proportional to 239,933.51, 360,121.71 and 121,687.91 is: 182,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,933.51 : 360,121.71 = 121,687.91 : x
  2. Step 2: Convert to fraction form
    239,933.51/360,121.71 = 121,687.91/x
  3. Step 3: Cross multiply
    239,933.51x = 360,121.71 × 121,687.91
  4. Step 4: Simplify right side
    239,933.51x = 43,822,458,235.53
  5. Step 5: Solve for x
    x = 43,822,458,235.53/239,933.51
  6. Step 6: Final answer
    x = 182,644.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.