Finding the Fourth Proportional to 305,645.94, 421,792.88 and 190,991.17
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Solution
The fourth proportional to 305,645.94, 421,792.88 and 190,991.17 is: 263,568.75
Step by Step Solution
- Step 1: Write the proportion equation
305,645.94 : 421,792.88 = 190,991.17 : x - Step 2: Convert to fraction form
305,645.94/421,792.88 = 190,991.17/x - Step 3: Cross multiply
305,645.94x = 421,792.88 × 190,991.17 - Step 4: Simplify right side
305,645.94x = 80,558,716,944.61 - Step 5: Solve for x
x = 80,558,716,944.61/305,645.94 - Step 6: Final answer
x = 263,568.75
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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.