Home / 419,635.20-629,529.60-170,342.40

Finding the Fourth Proportional to 419,635.20, 629,529.60 and 170,342.40

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Solution

The fourth proportional to 419,635.20, 629,529.60 and 170,342.40 is: 255,544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,635.20 : 629,529.60 = 170,342.40 : x
  2. Step 2: Convert to fraction form
    419,635.20/629,529.60 = 170,342.40/x
  3. Step 3: Cross multiply
    419,635.20x = 629,529.60 × 170,342.40
  4. Step 4: Simplify right side
    419,635.20x = 107,235,582,935.04
  5. Step 5: Solve for x
    x = 107,235,582,935.04/419,635.20
  6. Step 6: Final answer
    x = 255,544.78

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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.