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Finding the Fourth Proportional to 200,329.60, 300,057.72 and 100,315.36

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Solution

The fourth proportional to 200,329.60, 300,057.72 and 100,315.36 is: 150,254.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,329.60 : 300,057.72 = 100,315.36 : x
  2. Step 2: Convert to fraction form
    200,329.60/300,057.72 = 100,315.36/x
  3. Step 3: Cross multiply
    200,329.60x = 300,057.72 × 100,315.36
  4. Step 4: Simplify right side
    200,329.60x = 30,100,398,202.58
  5. Step 5: Solve for x
    x = 30,100,398,202.58/200,329.60
  6. Step 6: Final answer
    x = 150,254.37

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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.