Finding the Third Proportional to 138,435.75 and 216,879.75
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Solution
The third proportional to 138,435.75 and 216,879.75 is: 339,773.69
Step by Step Solution
- Step 1: Write the proportion equation
138,435.75 : 216,879.75 = 216,879.75 : x - Step 2: Convert to fraction form
138,435.75/216,879.75 = 216,879.75/x - Step 3: Cross multiply
138,435.75x = 216,879.75 × 216,879.75 - Step 4: Simplify right side
138,435.75x = 47,036,825,960.06 - Step 5: Solve for x
x = 47,036,825,960.06/138,435.75 - Step 6: Final answer
x = 339,773.69
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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.