Finding the Fourth Proportional to 236,187.30, 325,930.89 and 128,755.62
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Solution
The fourth proportional to 236,187.30, 325,930.89 and 128,755.62 is: 177,678.62
Step by Step Solution
- Step 1: Write the proportion equation
236,187.30 : 325,930.89 = 128,755.62 : x - Step 2: Convert to fraction form
236,187.30/325,930.89 = 128,755.62/x - Step 3: Cross multiply
236,187.30x = 325,930.89 × 128,755.62 - Step 4: Simplify right side
236,187.30x = 41,965,433,819.10 - Step 5: Solve for x
x = 41,965,433,819.10/236,187.30 - Step 6: Final answer
x = 177,678.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.