Finding the Fourth Proportional to 642,203.21, 886,269.60 and 355,723.26
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Solution
The fourth proportional to 642,203.21, 886,269.60 and 355,723.26 is: 490,914.26
Step by Step Solution
- Step 1: Write the proportion equation
642,203.21 : 886,269.60 = 355,723.26 : x - Step 2: Convert to fraction form
642,203.21/886,269.60 = 355,723.26/x - Step 3: Cross multiply
642,203.21x = 886,269.60 × 355,723.26 - Step 4: Simplify right side
642,203.21x = 315,266,711,350.90 - Step 5: Solve for x
x = 315,266,711,350.90/642,203.21 - Step 6: Final answer
x = 490,914.26
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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.