Home / 419,955.20-629,932.80-210,003.20

Finding the Fourth Proportional to 419,955.20, 629,932.80 and 210,003.20

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Solution

The fourth proportional to 419,955.20, 629,932.80 and 210,003.20 is: 315,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,955.20 : 629,932.80 = 210,003.20 : x
  2. Step 2: Convert to fraction form
    419,955.20/629,932.80 = 210,003.20/x
  3. Step 3: Cross multiply
    419,955.20x = 629,932.80 × 210,003.20
  4. Step 4: Simplify right side
    419,955.20x = 132,287,903,784.96
  5. Step 5: Solve for x
    x = 132,287,903,784.96/419,955.20
  6. Step 6: Final answer
    x = 315,004.80

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Similar ratio
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1.5x scale

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.