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Finding the Fourth Proportional to 201,305.40, 301,996.20 and 66,377.22

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Solution

The fourth proportional to 201,305.40, 301,996.20 and 66,377.22 is: 99,578.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,305.40 : 301,996.20 = 66,377.22 : x
  2. Step 2: Convert to fraction form
    201,305.40/301,996.20 = 66,377.22/x
  3. Step 3: Cross multiply
    201,305.40x = 301,996.20 × 66,377.22
  4. Step 4: Simplify right side
    201,305.40x = 20,045,668,206.56
  5. Step 5: Solve for x
    x = 20,045,668,206.56/201,305.40
  6. Step 6: Final answer
    x = 99,578.39

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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.