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Finding the Fourth Proportional to 381,388.32, 526,327.74 and 211,638.24

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Solution

The fourth proportional to 381,388.32, 526,327.74 and 211,638.24 is: 292,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,388.32 : 526,327.74 = 211,638.24 : x
  2. Step 2: Convert to fraction form
    381,388.32/526,327.74 = 211,638.24/x
  3. Step 3: Cross multiply
    381,388.32x = 526,327.74 × 211,638.24
  4. Step 4: Simplify right side
    381,388.32x = 111,391,076,556.78
  5. Step 5: Solve for x
    x = 111,391,076,556.78/381,388.32
  6. Step 6: Final answer
    x = 292,067.35

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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.