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Finding the Fourth Proportional to 455,761.50, 628,963.55 and 251,825.56

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Solution

The fourth proportional to 455,761.50, 628,963.55 and 251,825.56 is: 347,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,761.50 : 628,963.55 = 251,825.56 : x
  2. Step 2: Convert to fraction form
    455,761.50/628,963.55 = 251,825.56/x
  3. Step 3: Cross multiply
    455,761.50x = 628,963.55 × 251,825.56
  4. Step 4: Simplify right side
    455,761.50x = 158,389,099,496.63
  5. Step 5: Solve for x
    x = 158,389,099,496.63/455,761.50
  6. Step 6: Final answer
    x = 347,526.28

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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.