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Finding the Fourth Proportional to 289,446.20, 433,247.70 and 206,502.20

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Solution

The fourth proportional to 289,446.20, 433,247.70 and 206,502.20 is: 309,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,446.20 : 433,247.70 = 206,502.20 : x
  2. Step 2: Convert to fraction form
    289,446.20/433,247.70 = 206,502.20/x
  3. Step 3: Cross multiply
    289,446.20x = 433,247.70 × 206,502.20
  4. Step 4: Simplify right side
    289,446.20x = 89,466,603,194.94
  5. Step 5: Solve for x
    x = 89,466,603,194.94/289,446.20
  6. Step 6: Final answer
    x = 309,095.79

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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.