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Finding the Fourth Proportional to 201,400.60, 301,755.30 and 131,243.80

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Solution

The fourth proportional to 201,400.60, 301,755.30 and 131,243.80 is: 196,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,400.60 : 301,755.30 = 131,243.80 : x
  2. Step 2: Convert to fraction form
    201,400.60/301,755.30 = 131,243.80/x
  3. Step 3: Cross multiply
    201,400.60x = 301,755.30 × 131,243.80
  4. Step 4: Simplify right side
    201,400.60x = 39,603,512,242.14
  5. Step 5: Solve for x
    x = 39,603,512,242.14/201,400.60
  6. Step 6: Final answer
    x = 196,640.49

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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.