Finding the Fourth Proportional to 231,408.97, 319,373.96 and 129,440.09
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Solution
The fourth proportional to 231,408.97, 319,373.96 and 129,440.09 is: 178,643.87
Step by Step Solution
- Step 1: Write the proportion equation
231,408.97 : 319,373.96 = 129,440.09 : x - Step 2: Convert to fraction form
231,408.97/319,373.96 = 129,440.09/x - Step 3: Cross multiply
231,408.97x = 319,373.96 × 129,440.09 - Step 4: Simplify right side
231,408.97x = 41,339,794,277.29 - Step 5: Solve for x
x = 41,339,794,277.29/231,408.97 - Step 6: Final answer
x = 178,643.87
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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.