Finding the Fourth Proportional to 212,653.20, 318,979.80 and 202,285.20
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Solution
The fourth proportional to 212,653.20, 318,979.80 and 202,285.20 is: 303,427.80
Step by Step Solution
- Step 1: Write the proportion equation
212,653.20 : 318,979.80 = 202,285.20 : x - Step 2: Convert to fraction form
212,653.20/318,979.80 = 202,285.20/x - Step 3: Cross multiply
212,653.20x = 318,979.80 × 202,285.20 - Step 4: Simplify right side
212,653.20x = 64,524,892,638.96 - Step 5: Solve for x
x = 64,524,892,638.96/212,653.20 - Step 6: Final answer
x = 303,427.80
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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.