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Finding the Fourth Proportional to 239,676.14, 330,872.90 and 149,061.30

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Solution

The fourth proportional to 239,676.14, 330,872.90 and 149,061.30 is: 205,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,676.14 : 330,872.90 = 149,061.30 : x
  2. Step 2: Convert to fraction form
    239,676.14/330,872.90 = 149,061.30/x
  3. Step 3: Cross multiply
    239,676.14x = 330,872.90 × 149,061.30
  4. Step 4: Simplify right side
    239,676.14x = 49,320,344,608.77
  5. Step 5: Solve for x
    x = 49,320,344,608.77/239,676.14
  6. Step 6: Final answer
    x = 205,779.12

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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.