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Finding the Fourth Proportional to 355,189.50, 490,161.51 and 196,213.50

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Solution

The fourth proportional to 355,189.50, 490,161.51 and 196,213.50 is: 270,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,189.50 : 490,161.51 = 196,213.50 : x
  2. Step 2: Convert to fraction form
    355,189.50/490,161.51 = 196,213.50/x
  3. Step 3: Cross multiply
    355,189.50x = 490,161.51 × 196,213.50
  4. Step 4: Simplify right side
    355,189.50x = 96,176,305,442.39
  5. Step 5: Solve for x
    x = 96,176,305,442.39/355,189.50
  6. Step 6: Final answer
    x = 270,774.63

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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.