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Finding the Fourth Proportional to 201,447.26, 302,109 and 66,486.47

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Solution

The fourth proportional to 201,447.26, 302,109 and 66,486.47 is: 99,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,447.26 : 302,109 = 66,486.47 : x
  2. Step 2: Convert to fraction form
    201,447.26/302,109 = 66,486.47/x
  3. Step 3: Cross multiply
    201,447.26x = 302,109 × 66,486.47
  4. Step 4: Simplify right side
    201,447.26x = 20,086,160,965.23
  5. Step 5: Solve for x
    x = 20,086,160,965.23/201,447.26
  6. Step 6: Final answer
    x = 99,709.28

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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.