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Finding the Fourth Proportional to 300,921.55, 450,999.60 and 123,227.80

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Solution

The fourth proportional to 300,921.55, 450,999.60 and 123,227.80 is: 184,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,921.55 : 450,999.60 = 123,227.80 : x
  2. Step 2: Convert to fraction form
    300,921.55/450,999.60 = 123,227.80/x
  3. Step 3: Cross multiply
    300,921.55x = 450,999.60 × 123,227.80
  4. Step 4: Simplify right side
    300,921.55x = 55,575,688,508.88
  5. Step 5: Solve for x
    x = 55,575,688,508.88/300,921.55
  6. Step 6: Final answer
    x = 184,684.97

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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.