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Finding the Fourth Proportional to 201,781.80, 303,328.80 and 143,024.40

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Solution

The fourth proportional to 201,781.80, 303,328.80 and 143,024.40 is: 215,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,781.80 : 303,328.80 = 143,024.40 : x
  2. Step 2: Convert to fraction form
    201,781.80/303,328.80 = 143,024.40/x
  3. Step 3: Cross multiply
    201,781.80x = 303,328.80 × 143,024.40
  4. Step 4: Simplify right side
    201,781.80x = 43,383,419,622.72
  5. Step 5: Solve for x
    x = 43,383,419,622.72/201,781.80
  6. Step 6: Final answer
    x = 215,001.65

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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.