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Finding the Fourth Proportional to 214,672.70, 321,881.05 and 131,626.30

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Solution

The fourth proportional to 214,672.70, 321,881.05 and 131,626.30 is: 197,360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,672.70 : 321,881.05 = 131,626.30 : x
  2. Step 2: Convert to fraction form
    214,672.70/321,881.05 = 131,626.30/x
  3. Step 3: Cross multiply
    214,672.70x = 321,881.05 × 131,626.30
  4. Step 4: Simplify right side
    214,672.70x = 42,368,011,651.62
  5. Step 5: Solve for x
    x = 42,368,011,651.62/214,672.70
  6. Step 6: Final answer
    x = 197,360.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.