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Finding the Fourth Proportional to 200,916.80, 301,375.20 and 76,251.20

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Solution

The fourth proportional to 200,916.80, 301,375.20 and 76,251.20 is: 114,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,916.80 : 301,375.20 = 76,251.20 : x
  2. Step 2: Convert to fraction form
    200,916.80/301,375.20 = 76,251.20/x
  3. Step 3: Cross multiply
    200,916.80x = 301,375.20 × 76,251.20
  4. Step 4: Simplify right side
    200,916.80x = 22,980,220,650.24
  5. Step 5: Solve for x
    x = 22,980,220,650.24/200,916.80
  6. Step 6: Final answer
    x = 114,376.80

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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.