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Finding the Fourth Proportional to 321,784.56, 444,258.28 and 250,029.20

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Solution

The fourth proportional to 321,784.56, 444,258.28 and 250,029.20 is: 345,192.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,784.56 : 444,258.28 = 250,029.20 : x
  2. Step 2: Convert to fraction form
    321,784.56/444,258.28 = 250,029.20/x
  3. Step 3: Cross multiply
    321,784.56x = 444,258.28 × 250,029.20
  4. Step 4: Simplify right side
    321,784.56x = 111,077,542,341.78
  5. Step 5: Solve for x
    x = 111,077,542,341.78/321,784.56
  6. Step 6: Final answer
    x = 345,192.27

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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.