Finding the Fourth Proportional to 305,435.13, 421,551.06 and 169,512.75
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Solution
The fourth proportional to 305,435.13, 421,551.06 and 169,512.75 is: 233,955.67
Step by Step Solution
- Step 1: Write the proportion equation
305,435.13 : 421,551.06 = 169,512.75 : x - Step 2: Convert to fraction form
305,435.13/421,551.06 = 169,512.75/x - Step 3: Cross multiply
305,435.13x = 421,551.06 × 169,512.75 - Step 4: Simplify right side
305,435.13x = 71,458,279,446.02 - Step 5: Solve for x
x = 71,458,279,446.02/305,435.13 - Step 6: Final answer
x = 233,955.67
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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.