Finding the Fourth Proportional to 305,169,329.49, 421,082,619.87 and 179,746,497.87
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Solution
The fourth proportional to 305,169,329.49, 421,082,619.87 and 179,746,497.87 is: 248,020,095.47
Step by Step Solution
- Step 1: Write the proportion equation
305,169,329.49 : 421,082,619.87 = 179,746,497.87 : x - Step 2: Convert to fraction form
305,169,329.49/421,082,619.87 = 179,746,497.87/x - Step 3: Cross multiply
305,169,329.49x = 421,082,619.87 × 179,746,497.87 - Step 4: Simplify right side
305,169,329.49x = 75,688,126,235,556,976 - Step 5: Solve for x
x = 75,688,126,235,556,976/305,169,329.49 - Step 6: Final answer
x = 248,020,095.47
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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.