Finding the Fourth Proportional to 326,844.18, 490,091.31 and 139,753.62
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Solution
The fourth proportional to 326,844.18, 490,091.31 and 139,753.62 is: 209,555.62
Step by Step Solution
- Step 1: Write the proportion equation
326,844.18 : 490,091.31 = 139,753.62 : x - Step 2: Convert to fraction form
326,844.18/490,091.31 = 139,753.62/x - Step 3: Cross multiply
326,844.18x = 490,091.31 × 139,753.62 - Step 4: Simplify right side
326,844.18x = 68,492,034,703.04 - Step 5: Solve for x
x = 68,492,034,703.04/326,844.18 - Step 6: Final answer
x = 209,555.62
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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.