Finding the Fourth Proportional to 212,187,891.70, 318,281,837.55 and 202,143,656.80
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Solution
The fourth proportional to 212,187,891.70, 318,281,837.55 and 202,143,656.80 is: 303,215,485.20
Step by Step Solution
- Step 1: Write the proportion equation
212,187,891.70 : 318,281,837.55 = 202,143,656.80 : x - Step 2: Convert to fraction form
212,187,891.70/318,281,837.55 = 202,143,656.80/x - Step 3: Cross multiply
212,187,891.70x = 318,281,837.55 × 202,143,656.80 - Step 4: Simplify right side
212,187,891.70x = 64,338,654,535,380,560 - Step 5: Solve for x
x = 64,338,654,535,380,560/212,187,891.70 - Step 6: Final answer
x = 303,215,485.20
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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.