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Finding the Fourth Proportional to 455,621.22, 628,744.67 and 251,668.48

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Solution

The fourth proportional to 455,621.22, 628,744.67 and 251,668.48 is: 347,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,621.22 : 628,744.67 = 251,668.48 : x
  2. Step 2: Convert to fraction form
    455,621.22/628,744.67 = 251,668.48/x
  3. Step 3: Cross multiply
    455,621.22x = 628,744.67 × 251,668.48
  4. Step 4: Simplify right side
    455,621.22x = 158,235,214,148.66
  5. Step 5: Solve for x
    x = 158,235,214,148.66/455,621.22
  6. Step 6: Final answer
    x = 347,295.54

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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.