Finding the Fourth Proportional to 261,979.68, 361,531.97 and 142,747.68
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Solution
The fourth proportional to 261,979.68, 361,531.97 and 142,747.68 is: 196,991.80
Step by Step Solution
- Step 1: Write the proportion equation
261,979.68 : 361,531.97 = 142,747.68 : x - Step 2: Convert to fraction form
261,979.68/361,531.97 = 142,747.68/x - Step 3: Cross multiply
261,979.68x = 361,531.97 × 142,747.68 - Step 4: Simplify right side
261,979.68x = 51,607,849,249.59 - Step 5: Solve for x
x = 51,607,849,249.59/261,979.68 - Step 6: Final answer
x = 196,991.80
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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.