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Finding the Fourth Proportional to 501,363.61, 691,879.77 and 271,919.97

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Solution

The fourth proportional to 501,363.61, 691,879.77 and 271,919.97 is: 375,248.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,363.61 : 691,879.77 = 271,919.97 : x
  2. Step 2: Convert to fraction form
    501,363.61/691,879.77 = 271,919.97/x
  3. Step 3: Cross multiply
    501,363.61x = 691,879.77 × 271,919.97
  4. Step 4: Simplify right side
    501,363.61x = 188,135,926,302.01
  5. Step 5: Solve for x
    x = 188,135,926,302.01/501,363.61
  6. Step 6: Final answer
    x = 375,248.47

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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.