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Finding the Fourth Proportional to 490,910.25, 736,448.41 and 251,128.26

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Solution

The fourth proportional to 490,910.25, 736,448.41 and 251,128.26 is: 376,734.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,910.25 : 736,448.41 = 251,128.26 : x
  2. Step 2: Convert to fraction form
    490,910.25/736,448.41 = 251,128.26/x
  3. Step 3: Cross multiply
    490,910.25x = 736,448.41 × 251,128.26
  4. Step 4: Simplify right side
    490,910.25x = 184,943,004,100.83
  5. Step 5: Solve for x
    x = 184,943,004,100.83/490,910.25
  6. Step 6: Final answer
    x = 376,734.86

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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.