Finding the Fourth Proportional to 209,939,016.74, 289,715,967.81 and 117,119,524.68
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Solution
The fourth proportional to 209,939,016.74, 289,715,967.81 and 117,119,524.68 is: 161,625,013.63
Step by Step Solution
- Step 1: Write the proportion equation
209,939,016.74 : 289,715,967.81 = 117,119,524.68 : x - Step 2: Convert to fraction form
209,939,016.74/289,715,967.81 = 117,119,524.68/x - Step 3: Cross multiply
209,939,016.74x = 289,715,967.81 × 117,119,524.68 - Step 4: Simplify right side
209,939,016.74x = 33,931,396,442,113,384 - Step 5: Solve for x
x = 33,931,396,442,113,384/209,939,016.74 - Step 6: Final answer
x = 161,625,013.63
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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.