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Finding the Fourth Proportional to 201,738.40, 302,170.20 and 130,879.60

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Solution

The fourth proportional to 201,738.40, 302,170.20 and 130,879.60 is: 196,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,738.40 : 302,170.20 = 130,879.60 : x
  2. Step 2: Convert to fraction form
    201,738.40/302,170.20 = 130,879.60/x
  3. Step 3: Cross multiply
    201,738.40x = 302,170.20 × 130,879.60
  4. Step 4: Simplify right side
    201,738.40x = 39,547,914,907.92
  5. Step 5: Solve for x
    x = 39,547,914,907.92/201,738.40
  6. Step 6: Final answer
    x = 196,035.63

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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.