Home / 419,729.40-629,747.70-170,436.60

Finding the Fourth Proportional to 419,729.40, 629,747.70 and 170,436.60

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Solution

The fourth proportional to 419,729.40, 629,747.70 and 170,436.60 is: 255,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,729.40 : 629,747.70 = 170,436.60 : x
  2. Step 2: Convert to fraction form
    419,729.40/629,747.70 = 170,436.60/x
  3. Step 3: Cross multiply
    419,729.40x = 629,747.70 × 170,436.60
  4. Step 4: Simplify right side
    419,729.40x = 107,332,056,845.82
  5. Step 5: Solve for x
    x = 107,332,056,845.82/419,729.40
  6. Step 6: Final answer
    x = 255,717.27

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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.