Finding the Fourth Proportional to 345,879.70, 477,241.41 and 209,985.19
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Solution
The fourth proportional to 345,879.70, 477,241.41 and 209,985.19 is: 289,735.50
Step by Step Solution
- Step 1: Write the proportion equation
345,879.70 : 477,241.41 = 209,985.19 : x - Step 2: Convert to fraction form
345,879.70/477,241.41 = 209,985.19/x - Step 3: Cross multiply
345,879.70x = 477,241.41 × 209,985.19 - Step 4: Simplify right side
345,879.70x = 100,213,628,154.72 - Step 5: Solve for x
x = 100,213,628,154.72/345,879.70 - Step 6: Final answer
x = 289,735.50
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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.