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Finding the Fourth Proportional to 300,187.68, 449,781.60 and 211,254.48

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Solution

The fourth proportional to 300,187.68, 449,781.60 and 211,254.48 is: 316,529.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,187.68 : 449,781.60 = 211,254.48 : x
  2. Step 2: Convert to fraction form
    300,187.68/449,781.60 = 211,254.48/x
  3. Step 3: Cross multiply
    300,187.68x = 449,781.60 × 211,254.48
  4. Step 4: Simplify right side
    300,187.68x = 95,018,378,021.57
  5. Step 5: Solve for x
    x = 95,018,378,021.57/300,187.68
  6. Step 6: Final answer
    x = 316,529.91

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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.