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Finding the Fourth Proportional to 200,725.20, 300,742.20 and 169,621.20

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Solution

The fourth proportional to 200,725.20, 300,742.20 and 169,621.20 is: 254,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,725.20 : 300,742.20 = 169,621.20 : x
  2. Step 2: Convert to fraction form
    200,725.20/300,742.20 = 169,621.20/x
  3. Step 3: Cross multiply
    200,725.20x = 300,742.20 × 169,621.20
  4. Step 4: Simplify right side
    200,725.20x = 51,012,252,854.64
  5. Step 5: Solve for x
    x = 51,012,252,854.64/200,725.20
  6. Step 6: Final answer
    x = 254,139.75

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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.