Finding the Fourth Proportional to 220,138,570.20, 330,207,855.30 and 66,777,187.80
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Solution
The fourth proportional to 220,138,570.20, 330,207,855.30 and 66,777,187.80 is: 100,165,781.70
Step by Step Solution
- Step 1: Write the proportion equation
220,138,570.20 : 330,207,855.30 = 66,777,187.80 : x - Step 2: Convert to fraction form
220,138,570.20/330,207,855.30 = 66,777,187.80/x - Step 3: Cross multiply
220,138,570.20x = 330,207,855.30 × 66,777,187.80 - Step 4: Simplify right side
220,138,570.20x = 22,050,351,966,403,324 - Step 5: Solve for x
x = 22,050,351,966,403,324/220,138,570.20 - Step 6: Final answer
x = 100,165,781.70
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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.