Finding the Third Proportional to 128,285 and 201,235.75
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Solution
The third proportional to 128,285 and 201,235.75 is: 315,670.79
Step by Step Solution
- Step 1: Write the proportion equation
128,285 : 201,235.75 = 201,235.75 : x - Step 2: Convert to fraction form
128,285/201,235.75 = 201,235.75/x - Step 3: Cross multiply
128,285x = 201,235.75 × 201,235.75 - Step 4: Simplify right side
128,285x = 40,495,827,078.06 - Step 5: Solve for x
x = 40,495,827,078.06/128,285 - Step 6: Final answer
x = 315,670.79
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Why These Related Problems?
These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.