Finding the Fourth Proportional to 422,839.49, 634,197.68 and 123,239.62
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Solution
The fourth proportional to 422,839.49, 634,197.68 and 123,239.62 is: 184,841.49
Step by Step Solution
- Step 1: Write the proportion equation
422,839.49 : 634,197.68 = 123,239.62 : x - Step 2: Convert to fraction form
422,839.49/634,197.68 = 123,239.62/x - Step 3: Cross multiply
422,839.49x = 634,197.68 × 123,239.62 - Step 4: Simplify right side
422,839.49x = 78,158,278,886.39 - Step 5: Solve for x
x = 78,158,278,886.39/422,839.49 - Step 6: Final answer
x = 184,841.49
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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.