Finding the Fourth Proportional to 261,538.68, 392,249.64 and 121,279.08
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Solution
The fourth proportional to 261,538.68, 392,249.64 and 121,279.08 is: 181,891.55
Step by Step Solution
- Step 1: Write the proportion equation
261,538.68 : 392,249.64 = 121,279.08 : x - Step 2: Convert to fraction form
261,538.68/392,249.64 = 121,279.08/x - Step 3: Cross multiply
261,538.68x = 392,249.64 × 121,279.08 - Step 4: Simplify right side
261,538.68x = 47,571,675,469.53 - Step 5: Solve for x
x = 47,571,675,469.53/261,538.68 - Step 6: Final answer
x = 181,891.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.