Finding the Fourth Proportional to 208,245.48, 312,492.60 and 191,305.68
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Solution
The fourth proportional to 208,245.48, 312,492.60 and 191,305.68 is: 287,072.78
Step by Step Solution
- Step 1: Write the proportion equation
208,245.48 : 312,492.60 = 191,305.68 : x - Step 2: Convert to fraction form
208,245.48/312,492.60 = 191,305.68/x - Step 3: Cross multiply
208,245.48x = 312,492.60 × 191,305.68 - Step 4: Simplify right side
208,245.48x = 59,781,609,337.97 - Step 5: Solve for x
x = 59,781,609,337.97/208,245.48 - Step 6: Final answer
x = 287,072.78
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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.