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Finding the Fourth Proportional to 381,662.12, 526,673.16 and 211,885.32

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Solution

The fourth proportional to 381,662.12, 526,673.16 and 211,885.32 is: 292,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,662.12 : 526,673.16 = 211,885.32 : x
  2. Step 2: Convert to fraction form
    381,662.12/526,673.16 = 211,885.32/x
  3. Step 3: Cross multiply
    381,662.12x = 526,673.16 × 211,885.32
  4. Step 4: Simplify right side
    381,662.12x = 111,594,311,042.01
  5. Step 5: Solve for x
    x = 111,594,311,042.01/381,662.12
  6. Step 6: Final answer
    x = 292,390.32

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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.