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Finding the Fourth Proportional to 352,641.20, 486,644.85 and 201,738.20

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Solution

The fourth proportional to 352,641.20, 486,644.85 and 201,738.20 is: 278,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,641.20 : 486,644.85 = 201,738.20 : x
  2. Step 2: Convert to fraction form
    352,641.20/486,644.85 = 201,738.20/x
  3. Step 3: Cross multiply
    352,641.20x = 486,644.85 × 201,738.20
  4. Step 4: Simplify right side
    352,641.20x = 98,174,853,645.05
  5. Step 5: Solve for x
    x = 98,174,853,645.05/352,641.20
  6. Step 6: Final answer
    x = 278,398.71

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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.