Home / 300,815.20-414,969.78-203,986.32

Finding the Fourth Proportional to 300,815.20, 414,969.78 and 203,986.32

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Solution

The fourth proportional to 300,815.20, 414,969.78 and 203,986.32 is: 281,395.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,815.20 : 414,969.78 = 203,986.32 : x
  2. Step 2: Convert to fraction form
    300,815.20/414,969.78 = 203,986.32/x
  3. Step 3: Cross multiply
    300,815.20x = 414,969.78 × 203,986.32
  4. Step 4: Simplify right side
    300,815.20x = 84,648,158,333.41
  5. Step 5: Solve for x
    x = 84,648,158,333.41/300,815.20
  6. Step 6: Final answer
    x = 281,395.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.