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Finding the Third Proportional to 311,938.50 and 434,623.50

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Solution

The third proportional to 311,938.50 and 434,623.50 is: 605,560.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,938.50 : 434,623.50 = 434,623.50 : x
  2. Step 2: Convert to fraction form
    311,938.50/434,623.50 = 434,623.50/x
  3. Step 3: Cross multiply
    311,938.50x = 434,623.50 × 434,623.50
  4. Step 4: Simplify right side
    311,938.50x = 188,897,586,752.25
  5. Step 5: Solve for x
    x = 188,897,586,752.25/311,938.50
  6. Step 6: Final answer
    x = 605,560.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.