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Finding the Fourth Proportional to 300,211.10, 449,223.15 and 221,479.10

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Solution

The fourth proportional to 300,211.10, 449,223.15 and 221,479.10 is: 331,411.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,211.10 : 449,223.15 = 221,479.10 : x
  2. Step 2: Convert to fraction form
    300,211.10/449,223.15 = 221,479.10/x
  3. Step 3: Cross multiply
    300,211.10x = 449,223.15 × 221,479.10
  4. Step 4: Simplify right side
    300,211.10x = 99,493,538,961.17
  5. Step 5: Solve for x
    x = 99,493,538,961.17/300,211.10
  6. Step 6: Final answer
    x = 331,411.93

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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.