Finding the Fourth Proportional to 305,408.09, 421,448.94 and 169,440.59
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Solution
The fourth proportional to 305,408.09, 421,448.94 and 169,440.59 is: 233,820.12
Step by Step Solution
- Step 1: Write the proportion equation
305,408.09 : 421,448.94 = 169,440.59 : x - Step 2: Convert to fraction form
305,408.09/421,448.94 = 169,440.59/x - Step 3: Cross multiply
305,408.09x = 421,448.94 × 169,440.59 - Step 4: Simplify right side
305,408.09x = 71,410,554,941.23 - Step 5: Solve for x
x = 71,410,554,941.23/305,408.09 - Step 6: Final answer
x = 233,820.12
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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.