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Finding the Fourth Proportional to 200,600.76, 300,835.56 and 67,445.28

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Solution

The fourth proportional to 200,600.76, 300,835.56 and 67,445.28 is: 101,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,600.76 : 300,835.56 = 67,445.28 : x
  2. Step 2: Convert to fraction form
    200,600.76/300,835.56 = 67,445.28/x
  3. Step 3: Cross multiply
    200,600.76x = 300,835.56 × 67,445.28
  4. Step 4: Simplify right side
    200,600.76x = 20,289,938,578.16
  5. Step 5: Solve for x
    x = 20,289,938,578.16/200,600.76
  6. Step 6: Final answer
    x = 101,145.87

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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.