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Finding the Fourth Proportional to 206,581.70, 309,872.55 and 197,833.70

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Solution

The fourth proportional to 206,581.70, 309,872.55 and 197,833.70 is: 296,750.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,581.70 : 309,872.55 = 197,833.70 : x
  2. Step 2: Convert to fraction form
    206,581.70/309,872.55 = 197,833.70/x
  3. Step 3: Cross multiply
    206,581.70x = 309,872.55 × 197,833.70
  4. Step 4: Simplify right side
    206,581.70x = 61,303,233,094.94
  5. Step 5: Solve for x
    x = 61,303,233,094.94/206,581.70
  6. Step 6: Final answer
    x = 296,750.55

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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.