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Finding the Fourth Proportional to 500,997.31, 751,497.48 and 121,918.11

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Solution

The fourth proportional to 500,997.31, 751,497.48 and 121,918.11 is: 182,877.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,997.31 : 751,497.48 = 121,918.11 : x
  2. Step 2: Convert to fraction form
    500,997.31/751,497.48 = 121,918.11/x
  3. Step 3: Cross multiply
    500,997.31x = 751,497.48 × 121,918.11
  4. Step 4: Simplify right side
    500,997.31x = 91,621,152,431.36
  5. Step 5: Solve for x
    x = 91,621,152,431.36/500,997.31
  6. Step 6: Final answer
    x = 182,877.53

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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.