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Finding the Fourth Proportional to 239,761.38, 330,919.11 and 137,858.13

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Solution

The fourth proportional to 239,761.38, 330,919.11 and 137,858.13 is: 190,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,761.38 : 330,919.11 = 137,858.13 : x
  2. Step 2: Convert to fraction form
    239,761.38/330,919.11 = 137,858.13/x
  3. Step 3: Cross multiply
    239,761.38x = 330,919.11 × 137,858.13
  4. Step 4: Simplify right side
    239,761.38x = 45,619,889,685.86
  5. Step 5: Solve for x
    x = 45,619,889,685.86/239,761.38
  6. Step 6: Final answer
    x = 190,272.05

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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.