Finding the Third Proportional to 128,392.75 and 286,289.75
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Solution
The third proportional to 128,392.75 and 286,289.75 is: 638,367.98
Step by Step Solution
- Step 1: Write the proportion equation
128,392.75 : 286,289.75 = 286,289.75 : x - Step 2: Convert to fraction form
128,392.75/286,289.75 = 286,289.75/x - Step 3: Cross multiply
128,392.75x = 286,289.75 × 286,289.75 - Step 4: Simplify right side
128,392.75x = 81,961,820,955.06 - Step 5: Solve for x
x = 81,961,820,955.06/128,392.75 - Step 6: Final answer
x = 638,367.98
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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.