Finding the Third Proportional to 138,408.75 and 217,221.75
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Solution
The third proportional to 138,408.75 and 217,221.75 is: 340,912.61
Step by Step Solution
- Step 1: Write the proportion equation
138,408.75 : 217,221.75 = 217,221.75 : x - Step 2: Convert to fraction form
138,408.75/217,221.75 = 217,221.75/x - Step 3: Cross multiply
138,408.75x = 217,221.75 × 217,221.75 - Step 4: Simplify right side
138,408.75x = 47,185,288,673.06 - Step 5: Solve for x
x = 47,185,288,673.06/138,408.75 - Step 6: Final answer
x = 340,912.61
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These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.