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Finding the Fourth Proportional to 625,866.72, 938,790.36 and 251,880

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Solution

The fourth proportional to 625,866.72, 938,790.36 and 251,880 is: 377,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,866.72 : 938,790.36 = 251,880 : x
  2. Step 2: Convert to fraction form
    625,866.72/938,790.36 = 251,880/x
  3. Step 3: Cross multiply
    625,866.72x = 938,790.36 × 251,880
  4. Step 4: Simplify right side
    625,866.72x = 236,462,515,876.80
  5. Step 5: Solve for x
    x = 236,462,515,876.80/625,866.72
  6. Step 6: Final answer
    x = 377,816.09

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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.