Home / 218,537.90-327,936.45-143,872.10

Finding the Fourth Proportional to 218,537.90, 327,936.45 and 143,872.10

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Solution

The fourth proportional to 218,537.90, 327,936.45 and 143,872.10 is: 215,893.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,537.90 : 327,936.45 = 143,872.10 : x
  2. Step 2: Convert to fraction form
    218,537.90/327,936.45 = 143,872.10/x
  3. Step 3: Cross multiply
    218,537.90x = 327,936.45 × 143,872.10
  4. Step 4: Simplify right side
    218,537.90x = 47,180,905,728.05
  5. Step 5: Solve for x
    x = 47,180,905,728.05/218,537.90
  6. Step 6: Final answer
    x = 215,893.47

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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.