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Finding the Fourth Proportional to 455,662.56, 628,822.80 and 251,724

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Solution

The fourth proportional to 455,662.56, 628,822.80 and 251,724 is: 347,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,662.56 : 628,822.80 = 251,724 : x
  2. Step 2: Convert to fraction form
    455,662.56/628,822.80 = 251,724/x
  3. Step 3: Cross multiply
    455,662.56x = 628,822.80 × 251,724
  4. Step 4: Simplify right side
    455,662.56x = 158,289,790,507.20
  5. Step 5: Solve for x
    x = 158,289,790,507.20/455,662.56
  6. Step 6: Final answer
    x = 347,383.80

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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.