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Finding the Fourth Proportional to 300,803.10, 451,205.19 and 123,278.34

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Solution

The fourth proportional to 300,803.10, 451,205.19 and 123,278.34 is: 184,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,803.10 : 451,205.19 = 123,278.34 : x
  2. Step 2: Convert to fraction form
    300,803.10/451,205.19 = 123,278.34/x
  3. Step 3: Cross multiply
    300,803.10x = 451,205.19 × 123,278.34
  4. Step 4: Simplify right side
    300,803.10x = 55,623,826,822.58
  5. Step 5: Solve for x
    x = 55,623,826,822.58/300,803.10
  6. Step 6: Final answer
    x = 184,917.73

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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.