Finding the Fourth Proportional to 445,427.80, 668,141.70 and 209,231.80
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Solution
The fourth proportional to 445,427.80, 668,141.70 and 209,231.80 is: 313,847.70
Step by Step Solution
- Step 1: Write the proportion equation
445,427.80 : 668,141.70 = 209,231.80 : x - Step 2: Convert to fraction form
445,427.80/668,141.70 = 209,231.80/x - Step 3: Cross multiply
445,427.80x = 668,141.70 × 209,231.80 - Step 4: Simplify right side
445,427.80x = 139,796,490,546.06 - Step 5: Solve for x
x = 139,796,490,546.06/445,427.80 - Step 6: Final answer
x = 313,847.70
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Similar ratio
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1.5x scale
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.