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Finding the Fourth Proportional to 214,630.65, 321,842.30 and 125,912.97

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Solution

The fourth proportional to 214,630.65, 321,842.30 and 125,912.97 is: 188,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,630.65 : 321,842.30 = 125,912.97 : x
  2. Step 2: Convert to fraction form
    214,630.65/321,842.30 = 125,912.97/x
  3. Step 3: Cross multiply
    214,630.65x = 321,842.30 × 125,912.97
  4. Step 4: Simplify right side
    214,630.65x = 40,524,119,235.07
  5. Step 5: Solve for x
    x = 40,524,119,235.07/214,630.65
  6. Step 6: Final answer
    x = 188,808.63

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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.