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Finding the Third Proportional to 303,130.50 and 421,474.50

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Solution

The third proportional to 303,130.50 and 421,474.50 is: 586,020.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,130.50 : 421,474.50 = 421,474.50 : x
  2. Step 2: Convert to fraction form
    303,130.50/421,474.50 = 421,474.50/x
  3. Step 3: Cross multiply
    303,130.50x = 421,474.50 × 421,474.50
  4. Step 4: Simplify right side
    303,130.50x = 177,640,754,150.25
  5. Step 5: Solve for x
    x = 177,640,754,150.25/303,130.50
  6. Step 6: Final answer
    x = 586,020.72

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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.