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Finding the Fourth Proportional to 300,137.70, 450,207.31 and 122,644.73

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Solution

The fourth proportional to 300,137.70, 450,207.31 and 122,644.73 is: 183,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,137.70 : 450,207.31 = 122,644.73 : x
  2. Step 2: Convert to fraction form
    300,137.70/450,207.31 = 122,644.73/x
  3. Step 3: Cross multiply
    300,137.70x = 450,207.31 × 122,644.73
  4. Step 4: Simplify right side
    300,137.70x = 55,215,551,114.72
  5. Step 5: Solve for x
    x = 55,215,551,114.72/300,137.70
  6. Step 6: Final answer
    x = 183,967.40

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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.