Home / 419,963.20-629,944.80-210,011.20

Finding the Fourth Proportional to 419,963.20, 629,944.80 and 210,011.20

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Solution

The fourth proportional to 419,963.20, 629,944.80 and 210,011.20 is: 315,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,963.20 : 629,944.80 = 210,011.20 : x
  2. Step 2: Convert to fraction form
    419,963.20/629,944.80 = 210,011.20/x
  3. Step 3: Cross multiply
    419,963.20x = 629,944.80 × 210,011.20
  4. Step 4: Simplify right side
    419,963.20x = 132,295,463,381.76
  5. Step 5: Solve for x
    x = 132,295,463,381.76/419,963.20
  6. Step 6: Final answer
    x = 315,016.80

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Similar ratio
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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.