Finding the Fourth Proportional to 215,651,278.80, 323,147,757.96 and 128,040,271.97
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Solution
The fourth proportional to 215,651,278.80, 323,147,757.96 and 128,040,271.97 is: 191,864,973.14
Step by Step Solution
- Step 1: Write the proportion equation
215,651,278.80 : 323,147,757.96 = 128,040,271.97 : x - Step 2: Convert to fraction form
215,651,278.80/323,147,757.96 = 128,040,271.97/x - Step 3: Cross multiply
215,651,278.80x = 323,147,757.96 × 128,040,271.97 - Step 4: Simplify right side
215,651,278.80x = 41,375,926,814,078,392 - Step 5: Solve for x
x = 41,375,926,814,078,392/215,651,278.80 - Step 6: Final answer
x = 191,864,973.14
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.