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Finding the Fourth Proportional to 239,758.38, 330,877.31 and 137,816.64

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Solution

The fourth proportional to 239,758.38, 330,877.31 and 137,816.64 is: 190,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,758.38 : 330,877.31 = 137,816.64 : x
  2. Step 2: Convert to fraction form
    239,758.38/330,877.31 = 137,816.64/x
  3. Step 3: Cross multiply
    239,758.38x = 330,877.31 × 137,816.64
  4. Step 4: Simplify right side
    239,758.38x = 45,600,398,427.36
  5. Step 5: Solve for x
    x = 45,600,398,427.36/239,758.38
  6. Step 6: Final answer
    x = 190,193.14

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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.