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Finding the Third Proportional to 187,640 and 276,496.50

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Solution

The third proportional to 187,640 and 276,496.50 is: 407,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,640 : 276,496.50 = 276,496.50 : x
  2. Step 2: Convert to fraction form
    187,640/276,496.50 = 276,496.50/x
  3. Step 3: Cross multiply
    187,640x = 276,496.50 × 276,496.50
  4. Step 4: Simplify right side
    187,640x = 76,450,314,512.25
  5. Step 5: Solve for x
    x = 76,450,314,512.25/187,640
  6. Step 6: Final answer
    x = 407,430.80

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.