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Finding the Fourth Proportional to 455,661, 628,817.46 and 251,707.70

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Solution

The fourth proportional to 455,661, 628,817.46 and 251,707.70 is: 347,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,661 : 628,817.46 = 251,707.70 : x
  2. Step 2: Convert to fraction form
    455,661/628,817.46 = 251,707.70/x
  3. Step 3: Cross multiply
    455,661x = 628,817.46 × 251,707.70
  4. Step 4: Simplify right side
    455,661x = 158,278,196,576.44
  5. Step 5: Solve for x
    x = 158,278,196,576.44/455,661
  6. Step 6: Final answer
    x = 347,359.54

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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.