Finding the Fourth Proportional to 397,394.10, 548,407.53 and 216,107.75
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Solution
The fourth proportional to 397,394.10, 548,407.53 and 216,107.75 is: 298,230.70
Step by Step Solution
- Step 1: Write the proportion equation
397,394.10 : 548,407.53 = 216,107.75 : x - Step 2: Convert to fraction form
397,394.10/548,407.53 = 216,107.75/x - Step 3: Cross multiply
397,394.10x = 548,407.53 × 216,107.75 - Step 4: Simplify right side
397,394.10x = 118,515,118,762.38 - Step 5: Solve for x
x = 118,515,118,762.38/397,394.10 - Step 6: Final answer
x = 298,230.70
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1.5x scale
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.