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Finding the Fourth Proportional to 363,139.53, 501,125.16 and 201,991.11

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Solution

The fourth proportional to 363,139.53, 501,125.16 and 201,991.11 is: 278,743.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,139.53 : 501,125.16 = 201,991.11 : x
  2. Step 2: Convert to fraction form
    363,139.53/501,125.16 = 201,991.11/x
  3. Step 3: Cross multiply
    363,139.53x = 501,125.16 × 201,991.11
  4. Step 4: Simplify right side
    363,139.53x = 101,222,827,317.33
  5. Step 5: Solve for x
    x = 101,222,827,317.33/363,139.53
  6. Step 6: Final answer
    x = 278,743.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.