Finding the Third Proportional to 128,360.75 and 286,235.75
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Solution
The third proportional to 128,360.75 and 286,235.75 is: 638,286.27
Step by Step Solution
- Step 1: Write the proportion equation
128,360.75 : 286,235.75 = 286,235.75 : x - Step 2: Convert to fraction form
128,360.75/286,235.75 = 286,235.75/x - Step 3: Cross multiply
128,360.75x = 286,235.75 × 286,235.75 - Step 4: Simplify right side
128,360.75x = 81,930,904,578.06 - Step 5: Solve for x
x = 81,930,904,578.06/128,360.75 - Step 6: Final answer
x = 638,286.27
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Why These Related Problems?
These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.