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Finding the Fourth Proportional to 455,219.50, 628,202.94 and 251,270.47

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Solution

The fourth proportional to 455,219.50, 628,202.94 and 251,270.47 is: 346,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,219.50 : 628,202.94 = 251,270.47 : x
  2. Step 2: Convert to fraction form
    455,219.50/628,202.94 = 251,270.47/x
  3. Step 3: Cross multiply
    455,219.50x = 628,202.94 × 251,270.47
  4. Step 4: Simplify right side
    455,219.50x = 157,848,846,860.41
  5. Step 5: Solve for x
    x = 157,848,846,860.41/455,219.50
  6. Step 6: Final answer
    x = 346,753.27

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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.