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Finding the Fourth Proportional to 381,579.39, 526,540.55 and 220,486.34

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Solution

The fourth proportional to 381,579.39, 526,540.55 and 220,486.34 is: 304,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,579.39 : 526,540.55 = 220,486.34 : x
  2. Step 2: Convert to fraction form
    381,579.39/526,540.55 = 220,486.34/x
  3. Step 3: Cross multiply
    381,579.39x = 526,540.55 × 220,486.34
  4. Step 4: Simplify right side
    381,579.39x = 116,094,994,995.95
  5. Step 5: Solve for x
    x = 116,094,994,995.95/381,579.39
  6. Step 6: Final answer
    x = 304,248.60

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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.