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Finding the Fourth Proportional to 200,441.34, 300,661.80 and 82,112.88

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Solution

The fourth proportional to 200,441.34, 300,661.80 and 82,112.88 is: 123,169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,441.34 : 300,661.80 = 82,112.88 : x
  2. Step 2: Convert to fraction form
    200,441.34/300,661.80 = 82,112.88/x
  3. Step 3: Cross multiply
    200,441.34x = 300,661.80 × 82,112.88
  4. Step 4: Simplify right side
    200,441.34x = 24,688,206,303.98
  5. Step 5: Solve for x
    x = 24,688,206,303.98/200,441.34
  6. Step 6: Final answer
    x = 123,169.23

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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.