Finding the Fourth Proportional to 207,660,672.20, 311,491,008.30 and 86,476,377.80
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Solution
The fourth proportional to 207,660,672.20, 311,491,008.30 and 86,476,377.80 is: 129,714,566.70
Step by Step Solution
- Step 1: Write the proportion equation
207,660,672.20 : 311,491,008.30 = 86,476,377.80 : x - Step 2: Convert to fraction form
207,660,672.20/311,491,008.30 = 86,476,377.80/x - Step 3: Cross multiply
207,660,672.20x = 311,491,008.30 × 86,476,377.80 - Step 4: Simplify right side
207,660,672.20x = 26,936,614,115,053,736 - Step 5: Solve for x
x = 26,936,614,115,053,736/207,660,672.20 - Step 6: Final answer
x = 129,714,566.70
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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.