Finding the Third Proportional to 128,278.50 and 201,228.75
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Solution
The third proportional to 128,278.50 and 201,228.75 is: 315,664.82
Step by Step Solution
- Step 1: Write the proportion equation
128,278.50 : 201,228.75 = 201,228.75 : x - Step 2: Convert to fraction form
128,278.50/201,228.75 = 201,228.75/x - Step 3: Cross multiply
128,278.50x = 201,228.75 × 201,228.75 - Step 4: Simplify right side
128,278.50x = 40,493,009,826.56 - Step 5: Solve for x
x = 40,493,009,826.56/128,278.50 - Step 6: Final answer
x = 315,664.82
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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.