Finding the Third Proportional to 128,390.25 and 286,284.75
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Solution
The third proportional to 128,390.25 and 286,284.75 is: 638,358.12
Step by Step Solution
- Step 1: Write the proportion equation
128,390.25 : 286,284.75 = 286,284.75 : x - Step 2: Convert to fraction form
128,390.25/286,284.75 = 286,284.75/x - Step 3: Cross multiply
128,390.25x = 286,284.75 × 286,284.75 - Step 4: Simplify right side
128,390.25x = 81,958,958,082.56 - Step 5: Solve for x
x = 81,958,958,082.56/128,390.25 - Step 6: Final answer
x = 638,358.12
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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.