Home / 419,765.20-629,724.60-170,472.40

Finding the Fourth Proportional to 419,765.20, 629,724.60 and 170,472.40

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Solution

The fourth proportional to 419,765.20, 629,724.60 and 170,472.40 is: 255,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,765.20 : 629,724.60 = 170,472.40 : x
  2. Step 2: Convert to fraction form
    419,765.20/629,724.60 = 170,472.40/x
  3. Step 3: Cross multiply
    419,765.20x = 629,724.60 × 170,472.40
  4. Step 4: Simplify right side
    419,765.20x = 107,350,663,901.04
  5. Step 5: Solve for x
    x = 107,350,663,901.04/419,765.20
  6. Step 6: Final answer
    x = 255,739.79

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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.