Finding the Fourth Proportional to 311,684,706.82, 430,129,927.49 and 170,568,188.73
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Solution
The fourth proportional to 311,684,706.82, 430,129,927.49 and 170,568,188.73 is: 235,386,854.23
Step by Step Solution
- Step 1: Write the proportion equation
311,684,706.82 : 430,129,927.49 = 170,568,188.73 : x - Step 2: Convert to fraction form
311,684,706.82/430,129,927.49 = 170,568,188.73/x - Step 3: Cross multiply
311,684,706.82x = 430,129,927.49 × 170,568,188.73 - Step 4: Simplify right side
311,684,706.82x = 73,366,482,650,535,536 - Step 5: Solve for x
x = 73,366,482,650,535,536/311,684,706.82 - Step 6: Final answer
x = 235,386,854.23
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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.