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Finding the Fourth Proportional to 259,954.80, 389,640.60 and 133,546.20

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Solution

The fourth proportional to 259,954.80, 389,640.60 and 133,546.20 is: 200,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,954.80 : 389,640.60 = 133,546.20 : x
  2. Step 2: Convert to fraction form
    259,954.80/389,640.60 = 133,546.20/x
  3. Step 3: Cross multiply
    259,954.80x = 389,640.60 × 133,546.20
  4. Step 4: Simplify right side
    259,954.80x = 52,035,021,495.72
  5. Step 5: Solve for x
    x = 52,035,021,495.72/259,954.80
  6. Step 6: Final answer
    x = 200,169.50

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1.5x scale

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.