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Finding the Fourth Proportional to 300,805.49, 451,208.85 and 123,280.63

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Solution

The fourth proportional to 300,805.49, 451,208.85 and 123,280.63 is: 184,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,805.49 : 451,208.85 = 123,280.63 : x
  2. Step 2: Convert to fraction form
    300,805.49/451,208.85 = 123,280.63/x
  3. Step 3: Cross multiply
    300,805.49x = 451,208.85 × 123,280.63
  4. Step 4: Simplify right side
    300,805.49x = 55,625,309,699.25
  5. Step 5: Solve for x
    x = 55,625,309,699.25/300,805.49
  6. Step 6: Final answer
    x = 184,921.19

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1.5x scale

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.