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Finding the Fourth Proportional to 201,792.78, 301,941.77 and 126,311.49

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Solution

The fourth proportional to 201,792.78, 301,941.77 and 126,311.49 is: 188,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,792.78 : 301,941.77 = 126,311.49 : x
  2. Step 2: Convert to fraction form
    201,792.78/301,941.77 = 126,311.49/x
  3. Step 3: Cross multiply
    201,792.78x = 301,941.77 × 126,311.49
  4. Step 4: Simplify right side
    201,792.78x = 38,138,714,230.38
  5. Step 5: Solve for x
    x = 38,138,714,230.38/201,792.78
  6. Step 6: Final answer
    x = 188,999.40

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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.