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Finding the Fourth Proportional to 321,937.90, 482,906.85 and 203,742.70

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Solution

The fourth proportional to 321,937.90, 482,906.85 and 203,742.70 is: 305,614.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,937.90 : 482,906.85 = 203,742.70 : x
  2. Step 2: Convert to fraction form
    321,937.90/482,906.85 = 203,742.70/x
  3. Step 3: Cross multiply
    321,937.90x = 482,906.85 × 203,742.70
  4. Step 4: Simplify right side
    321,937.90x = 98,388,745,467.50
  5. Step 5: Solve for x
    x = 98,388,745,467.50/321,937.90
  6. Step 6: Final answer
    x = 305,614.05

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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.