Finding the Fourth Proportional to 249,531,198.67, 344,329,944.91 and 138,019,639.56
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Solution
The fourth proportional to 249,531,198.67, 344,329,944.91 and 138,019,639.56 is: 190,454,320.50
Step by Step Solution
- Step 1: Write the proportion equation
249,531,198.67 : 344,329,944.91 = 138,019,639.56 : x - Step 2: Convert to fraction form
249,531,198.67/344,329,944.91 = 138,019,639.56/x - Step 3: Cross multiply
249,531,198.67x = 344,329,944.91 × 138,019,639.56 - Step 4: Simplify right side
249,531,198.67x = 47,524,294,886,192,864 - Step 5: Solve for x
x = 47,524,294,886,192,864/249,531,198.67 - Step 6: Final answer
x = 190,454,320.50
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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.