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Finding the Fourth Proportional to 201,738.80, 302,608.20 and 191,370.80

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Solution

The fourth proportional to 201,738.80, 302,608.20 and 191,370.80 is: 287,056.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,738.80 : 302,608.20 = 191,370.80 : x
  2. Step 2: Convert to fraction form
    201,738.80/302,608.20 = 191,370.80/x
  3. Step 3: Cross multiply
    201,738.80x = 302,608.20 × 191,370.80
  4. Step 4: Simplify right side
    201,738.80x = 57,910,373,320.56
  5. Step 5: Solve for x
    x = 57,910,373,320.56/201,738.80
  6. Step 6: Final answer
    x = 287,056.20

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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.