Finding the Fourth Proportional to 305,408.59, 421,449.63 and 169,441.09
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Solution
The fourth proportional to 305,408.59, 421,449.63 and 169,441.09 is: 233,820.81
Step by Step Solution
- Step 1: Write the proportion equation
305,408.59 : 421,449.63 = 169,441.09 : x - Step 2: Convert to fraction form
305,408.59/421,449.63 = 169,441.09/x - Step 3: Cross multiply
305,408.59x = 421,449.63 × 169,441.09 - Step 4: Simplify right side
305,408.59x = 71,410,884,687.30 - Step 5: Solve for x
x = 71,410,884,687.30/305,408.59 - Step 6: Final answer
x = 233,820.81
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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.