Finding the Fourth Proportional to 212,026,216.20, 318,039,324.30 and 191,618,881.80
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Solution
The fourth proportional to 212,026,216.20, 318,039,324.30 and 191,618,881.80 is: 287,428,322.70
Step by Step Solution
- Step 1: Write the proportion equation
212,026,216.20 : 318,039,324.30 = 191,618,881.80 : x - Step 2: Convert to fraction form
212,026,216.20/318,039,324.30 = 191,618,881.80/x - Step 3: Cross multiply
212,026,216.20x = 318,039,324.30 × 191,618,881.80 - Step 4: Simplify right side
212,026,216.20x = 60,942,339,690,793,576 - Step 5: Solve for x
x = 60,942,339,690,793,576/212,026,216.20 - Step 6: Final answer
x = 287,428,322.70
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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.