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Finding the Fourth Proportional to 300,019.80, 449,511.30 and 253,363.80

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Solution

The fourth proportional to 300,019.80, 449,511.30 and 253,363.80 is: 379,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,019.80 : 449,511.30 = 253,363.80 : x
  2. Step 2: Convert to fraction form
    300,019.80/449,511.30 = 253,363.80/x
  3. Step 3: Cross multiply
    300,019.80x = 449,511.30 × 253,363.80
  4. Step 4: Simplify right side
    300,019.80x = 113,889,891,110.94
  5. Step 5: Solve for x
    x = 113,889,891,110.94/300,019.80
  6. Step 6: Final answer
    x = 379,607.92

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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.