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Finding the Fourth Proportional to 625,867.72, 938,791.86 and 251,881

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Solution

The fourth proportional to 625,867.72, 938,791.86 and 251,881 is: 377,817.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,867.72 : 938,791.86 = 251,881 : x
  2. Step 2: Convert to fraction form
    625,867.72/938,791.86 = 251,881/x
  3. Step 3: Cross multiply
    625,867.72x = 938,791.86 × 251,881
  4. Step 4: Simplify right side
    625,867.72x = 236,463,832,488.66
  5. Step 5: Solve for x
    x = 236,463,832,488.66/625,867.72
  6. Step 6: Final answer
    x = 377,817.59

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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.