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Finding the Fourth Proportional to 550,906.49, 760,288.61 and 305,903.90

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Solution

The fourth proportional to 550,906.49, 760,288.61 and 305,903.90 is: 422,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,906.49 : 760,288.61 = 305,903.90 : x
  2. Step 2: Convert to fraction form
    550,906.49/760,288.61 = 305,903.90/x
  3. Step 3: Cross multiply
    550,906.49x = 760,288.61 × 305,903.90
  4. Step 4: Simplify right side
    550,906.49x = 232,575,245,593.62
  5. Step 5: Solve for x
    x = 232,575,245,593.62/550,906.49
  6. Step 6: Final answer
    x = 422,168.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.