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Finding the Fourth Proportional to 451,028.30, 622,419.80 and 247,074.77

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Solution

The fourth proportional to 451,028.30, 622,419.80 and 247,074.77 is: 340,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,028.30 : 622,419.80 = 247,074.77 : x
  2. Step 2: Convert to fraction form
    451,028.30/622,419.80 = 247,074.77/x
  3. Step 3: Cross multiply
    451,028.30x = 622,419.80 × 247,074.77
  4. Step 4: Simplify right side
    451,028.30x = 153,784,228,310.76
  5. Step 5: Solve for x
    x = 153,784,228,310.76/451,028.30
  6. Step 6: Final answer
    x = 340,963.59

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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.