Finding the Third Proportional to 128,769.75 and 279,705.09
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Solution
The third proportional to 128,769.75 and 279,705.09 is: 607,556.82
Step by Step Solution
- Step 1: Write the proportion equation
128,769.75 : 279,705.09 = 279,705.09 : x - Step 2: Convert to fraction form
128,769.75/279,705.09 = 279,705.09/x - Step 3: Cross multiply
128,769.75x = 279,705.09 × 279,705.09 - Step 4: Simplify right side
128,769.75x = 78,234,939,469.70 - Step 5: Solve for x
x = 78,234,939,469.70/128,769.75 - Step 6: Final answer
x = 607,556.82
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These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.