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Finding the Fourth Proportional to 200,552.40, 300,755.70 and 100,679.40

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Solution

The fourth proportional to 200,552.40, 300,755.70 and 100,679.40 is: 150,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,552.40 : 300,755.70 = 100,679.40 : x
  2. Step 2: Convert to fraction form
    200,552.40/300,755.70 = 100,679.40/x
  3. Step 3: Cross multiply
    200,552.40x = 300,755.70 × 100,679.40
  4. Step 4: Simplify right side
    200,552.40x = 30,279,903,422.58
  5. Step 5: Solve for x
    x = 30,279,903,422.58/200,552.40
  6. Step 6: Final answer
    x = 150,982.50

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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.