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Finding the Fourth Proportional to 416,622.18, 624,965.68 and 136,167.78

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Solution

The fourth proportional to 416,622.18, 624,965.68 and 136,167.78 is: 204,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,622.18 : 624,965.68 = 136,167.78 : x
  2. Step 2: Convert to fraction form
    416,622.18/624,965.68 = 136,167.78/x
  3. Step 3: Cross multiply
    416,622.18x = 624,965.68 × 136,167.78
  4. Step 4: Simplify right side
    416,622.18x = 85,100,190,969.68
  5. Step 5: Solve for x
    x = 85,100,190,969.68/416,622.18
  6. Step 6: Final answer
    x = 204,262.27

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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.