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Finding the Fourth Proportional to 500,996.81, 751,496.73 and 121,917.61

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Solution

The fourth proportional to 500,996.81, 751,496.73 and 121,917.61 is: 182,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,996.81 : 751,496.73 = 121,917.61 : x
  2. Step 2: Convert to fraction form
    500,996.81/751,496.73 = 121,917.61/x
  3. Step 3: Cross multiply
    500,996.81x = 751,496.73 × 121,917.61
  4. Step 4: Simplify right side
    500,996.81x = 91,620,683,594.27
  5. Step 5: Solve for x
    x = 91,620,683,594.27/500,996.81
  6. Step 6: Final answer
    x = 182,876.78

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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.