Finding the Fourth Proportional to 354,519,497.57, 489,318,535.94 and 207,889,020.77
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Solution
The fourth proportional to 354,519,497.57, 489,318,535.94 and 207,889,020.77 is: 286,934,715.80
Step by Step Solution
- Step 1: Write the proportion equation
354,519,497.57 : 489,318,535.94 = 207,889,020.77 : x - Step 2: Convert to fraction form
354,519,497.57/489,318,535.94 = 207,889,020.77/x - Step 3: Cross multiply
354,519,497.57x = 489,318,535.94 × 207,889,020.77 - Step 4: Simplify right side
354,519,497.57x = 101,723,951,277,690,608 - Step 5: Solve for x
x = 101,723,951,277,690,608/354,519,497.57 - Step 6: Final answer
x = 286,934,715.80
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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.