Finding the Third Proportional to 128,121.75 and 280,374.75
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Solution
The third proportional to 128,121.75 and 280,374.75 is: 613,557.03
Step by Step Solution
- Step 1: Write the proportion equation
128,121.75 : 280,374.75 = 280,374.75 : x - Step 2: Convert to fraction form
128,121.75/280,374.75 = 280,374.75/x - Step 3: Cross multiply
128,121.75x = 280,374.75 × 280,374.75 - Step 4: Simplify right side
128,121.75x = 78,610,000,437.56 - Step 5: Solve for x
x = 78,610,000,437.56/128,121.75 - Step 6: Final answer
x = 613,557.03
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These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.