Finding the Fourth Proportional to 398,414.75, 549,812.36 and 219,566.75
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Solution
The fourth proportional to 398,414.75, 549,812.36 and 219,566.75 is: 303,002.12
Step by Step Solution
- Step 1: Write the proportion equation
398,414.75 : 549,812.36 = 219,566.75 : x - Step 2: Convert to fraction form
398,414.75/549,812.36 = 219,566.75/x - Step 3: Cross multiply
398,414.75x = 549,812.36 × 219,566.75 - Step 4: Simplify right side
398,414.75x = 120,720,511,897.20 - Step 5: Solve for x
x = 120,720,511,897.20/398,414.75 - Step 6: Final answer
x = 303,002.12
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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.