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Finding the Fourth Proportional to 451,028.92, 622,265.30 and 257,297.40

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Solution

The fourth proportional to 451,028.92, 622,265.30 and 257,297.40 is: 354,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,028.92 : 622,265.30 = 257,297.40 : x
  2. Step 2: Convert to fraction form
    451,028.92/622,265.30 = 257,297.40/x
  3. Step 3: Cross multiply
    451,028.92x = 622,265.30 × 257,297.40
  4. Step 4: Simplify right side
    451,028.92x = 160,107,243,800.22
  5. Step 5: Solve for x
    x = 160,107,243,800.22/451,028.92
  6. Step 6: Final answer
    x = 354,982.21

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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.