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Finding the Fourth Proportional to 200,371.68, 300,709.80 and 74,131.29

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Solution

The fourth proportional to 200,371.68, 300,709.80 and 74,131.29 is: 111,253.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,371.68 : 300,709.80 = 74,131.29 : x
  2. Step 2: Convert to fraction form
    200,371.68/300,709.80 = 74,131.29/x
  3. Step 3: Cross multiply
    200,371.68x = 300,709.80 × 74,131.29
  4. Step 4: Simplify right side
    200,371.68x = 22,292,005,389.64
  5. Step 5: Solve for x
    x = 22,292,005,389.64/200,371.68
  6. Step 6: Final answer
    x = 111,253.27

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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.