Finding the Third Proportional to 128,216.63 and 279,009.75
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Solution
The third proportional to 128,216.63 and 279,009.75 is: 607,147.79
Step by Step Solution
- Step 1: Write the proportion equation
128,216.63 : 279,009.75 = 279,009.75 : x - Step 2: Convert to fraction form
128,216.63/279,009.75 = 279,009.75/x - Step 3: Cross multiply
128,216.63x = 279,009.75 × 279,009.75 - Step 4: Simplify right side
128,216.63x = 77,846,440,595.06 - Step 5: Solve for x
x = 77,846,440,595.06/128,216.63 - Step 6: Final answer
x = 607,147.79
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These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.