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Finding the Fourth Proportional to 381,445.66, 526,377.27 and 211,678.30

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Solution

The fourth proportional to 381,445.66, 526,377.27 and 211,678.30 is: 292,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,445.66 : 526,377.27 = 211,678.30 : x
  2. Step 2: Convert to fraction form
    381,445.66/526,377.27 = 211,678.30/x
  3. Step 3: Cross multiply
    381,445.66x = 526,377.27 × 211,678.30
  4. Step 4: Simplify right side
    381,445.66x = 111,422,645,672.24
  5. Step 5: Solve for x
    x = 111,422,645,672.24/381,445.66
  6. Step 6: Final answer
    x = 292,106.21

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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.