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Finding the Fourth Proportional to 381,347.31, 526,265.43 and 220,216.44

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Solution

The fourth proportional to 381,347.31, 526,265.43 and 220,216.44 is: 303,902.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,347.31 : 526,265.43 = 220,216.44 : x
  2. Step 2: Convert to fraction form
    381,347.31/526,265.43 = 220,216.44/x
  3. Step 3: Cross multiply
    381,347.31x = 526,265.43 × 220,216.44
  4. Step 4: Simplify right side
    381,347.31x = 115,892,300,805.33
  5. Step 5: Solve for x
    x = 115,892,300,805.33/381,347.31
  6. Step 6: Final answer
    x = 303,902.24

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1.5x scale

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.