Home / 419,734.40-629,755.20-170,441.60

Finding the Fourth Proportional to 419,734.40, 629,755.20 and 170,441.60

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Solution

The fourth proportional to 419,734.40, 629,755.20 and 170,441.60 is: 255,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,734.40 : 629,755.20 = 170,441.60 : x
  2. Step 2: Convert to fraction form
    419,734.40/629,755.20 = 170,441.60/x
  3. Step 3: Cross multiply
    419,734.40x = 629,755.20 × 170,441.60
  4. Step 4: Simplify right side
    419,734.40x = 107,336,483,896.32
  5. Step 5: Solve for x
    x = 107,336,483,896.32/419,734.40
  6. Step 6: Final answer
    x = 255,724.77

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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.