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Finding the Fourth Proportional to 200,644.43, 301,012.88 and 67,521.20

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Solution

The fourth proportional to 200,644.43, 301,012.88 and 67,521.20 is: 101,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,644.43 : 301,012.88 = 67,521.20 : x
  2. Step 2: Convert to fraction form
    200,644.43/301,012.88 = 67,521.20/x
  3. Step 3: Cross multiply
    200,644.43x = 301,012.88 × 67,521.20
  4. Step 4: Simplify right side
    200,644.43x = 20,324,749,030.39
  5. Step 5: Solve for x
    x = 20,324,749,030.39/200,644.43
  6. Step 6: Final answer
    x = 101,297.35

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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.