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Finding the Fourth Proportional to 624,015.20, 936,022.80 and 269,721.20

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Solution

The fourth proportional to 624,015.20, 936,022.80 and 269,721.20 is: 404,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,015.20 : 936,022.80 = 269,721.20 : x
  2. Step 2: Convert to fraction form
    624,015.20/936,022.80 = 269,721.20/x
  3. Step 3: Cross multiply
    624,015.20x = 936,022.80 × 269,721.20
  4. Step 4: Simplify right side
    624,015.20x = 252,465,192,843.36
  5. Step 5: Solve for x
    x = 252,465,192,843.36/624,015.20
  6. Step 6: Final answer
    x = 404,581.80

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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.