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Finding the Fourth Proportional to 200,645.49, 300,999.37 and 67,515.37

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Solution

The fourth proportional to 200,645.49, 300,999.37 and 67,515.37 is: 101,283.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,645.49 : 300,999.37 = 67,515.37 : x
  2. Step 2: Convert to fraction form
    200,645.49/300,999.37 = 67,515.37/x
  3. Step 3: Cross multiply
    200,645.49x = 300,999.37 × 67,515.37
  4. Step 4: Simplify right side
    200,645.49x = 20,322,081,992.74
  5. Step 5: Solve for x
    x = 20,322,081,992.74/200,645.49
  6. Step 6: Final answer
    x = 101,283.52

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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.