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Finding the Fourth Proportional to 455,622.56, 628,761.18 and 248,893.80

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Solution

The fourth proportional to 455,622.56, 628,761.18 and 248,893.80 is: 343,474.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,622.56 : 628,761.18 = 248,893.80 : x
  2. Step 2: Convert to fraction form
    455,622.56/628,761.18 = 248,893.80/x
  3. Step 3: Cross multiply
    455,622.56x = 628,761.18 × 248,893.80
  4. Step 4: Simplify right side
    455,622.56x = 156,494,759,382.68
  5. Step 5: Solve for x
    x = 156,494,759,382.68/455,622.56
  6. Step 6: Final answer
    x = 343,474.57

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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.