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Finding the Fourth Proportional to 500,997.29, 751,485 and 121,919.72

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Solution

The fourth proportional to 500,997.29, 751,485 and 121,919.72 is: 182,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,997.29 : 751,485 = 121,919.72 : x
  2. Step 2: Convert to fraction form
    500,997.29/751,485 = 121,919.72/x
  3. Step 3: Cross multiply
    500,997.29x = 751,485 × 121,919.72
  4. Step 4: Simplify right side
    500,997.29x = 91,620,840,784.20
  5. Step 5: Solve for x
    x = 91,620,840,784.20/500,997.29
  6. Step 6: Final answer
    x = 182,876.92

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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.