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Finding the Fourth Proportional to 455,391.26, 628,429.89 and 248,652.56

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Solution

The fourth proportional to 455,391.26, 628,429.89 and 248,652.56 is: 343,135.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,391.26 : 628,429.89 = 248,652.56 : x
  2. Step 2: Convert to fraction form
    455,391.26/628,429.89 = 248,652.56/x
  3. Step 3: Cross multiply
    455,391.26x = 628,429.89 × 248,652.56
  4. Step 4: Simplify right side
    455,391.26x = 156,260,701,665.08
  5. Step 5: Solve for x
    x = 156,260,701,665.08/455,391.26
  6. Step 6: Final answer
    x = 343,135.04

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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.