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Finding the Fourth Proportional to 251,241.32, 376,781.00 and 82,721.54

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Solution

The fourth proportional to 251,241.32, 376,781.00 and 82,721.54 is: 124,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,241.32 : 376,781.00 = 82,721.54 : x
  2. Step 2: Convert to fraction form
    251,241.32/376,781.00 = 82,721.54/x
  3. Step 3: Cross multiply
    251,241.32x = 376,781.00 × 82,721.54
  4. Step 4: Simplify right side
    251,241.32x = 31,167,902,265.23
  5. Step 5: Solve for x
    x = 31,167,902,265.23/251,241.32
  6. Step 6: Final answer
    x = 124,055.64

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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.