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Finding the Fourth Proportional to 201,705.44, 302,603.76 and 66,769.28

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Solution

The fourth proportional to 201,705.44, 302,603.76 and 66,769.28 is: 100,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,705.44 : 302,603.76 = 66,769.28 : x
  2. Step 2: Convert to fraction form
    201,705.44/302,603.76 = 66,769.28/x
  3. Step 3: Cross multiply
    201,705.44x = 302,603.76 × 66,769.28
  4. Step 4: Simplify right side
    201,705.44x = 20,204,635,180.49
  5. Step 5: Solve for x
    x = 20,204,635,180.49/201,705.44
  6. Step 6: Final answer
    x = 100,169.01

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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.