Finding the Fourth Proportional to 311,950,311.11, 430,504,880.70 and 172,721,085.18
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Solution
The fourth proportional to 311,950,311.11, 430,504,880.70 and 172,721,085.18 is: 238,362,545.32
Step by Step Solution
- Step 1: Write the proportion equation
311,950,311.11 : 430,504,880.70 = 172,721,085.18 : x - Step 2: Convert to fraction form
311,950,311.11/430,504,880.70 = 172,721,085.18/x - Step 3: Cross multiply
311,950,311.11x = 430,504,880.70 × 172,721,085.18 - Step 4: Simplify right side
311,950,311.11x = 74,357,270,169,790,432 - Step 5: Solve for x
x = 74,357,270,169,790,432/311,950,311.11 - Step 6: Final answer
x = 238,362,545.32
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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.