Finding the Fourth Proportional to 221,040,578.51, 305,030,654.68 and 121,919,197.17
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Solution
The fourth proportional to 221,040,578.51, 305,030,654.68 and 121,919,197.17 is: 168,245,544.70
Step by Step Solution
- Step 1: Write the proportion equation
221,040,578.51 : 305,030,654.68 = 121,919,197.17 : x - Step 2: Convert to fraction form
221,040,578.51/305,030,654.68 = 121,919,197.17/x - Step 3: Cross multiply
221,040,578.51x = 305,030,654.68 × 121,919,197.17 - Step 4: Simplify right side
221,040,578.51x = 37,189,092,531,549,560 - Step 5: Solve for x
x = 37,189,092,531,549,560/221,040,578.51 - Step 6: Final answer
x = 168,245,544.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.