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Finding the Fourth Proportional to 455,871.79, 629,101.51 and 251,917.03

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Solution

The fourth proportional to 455,871.79, 629,101.51 and 251,917.03 is: 347,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,871.79 : 629,101.51 = 251,917.03 : x
  2. Step 2: Convert to fraction form
    455,871.79/629,101.51 = 251,917.03/x
  3. Step 3: Cross multiply
    455,871.79x = 629,101.51 × 251,917.03
  4. Step 4: Simplify right side
    455,871.79x = 158,481,383,967.72
  5. Step 5: Solve for x
    x = 158,481,383,967.72/455,871.79
  6. Step 6: Final answer
    x = 347,644.64

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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.