Finding the Fourth Proportional to 326,499.49, 489,938.32 and 136,942.99
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Solution
The fourth proportional to 326,499.49, 489,938.32 and 136,942.99 is: 205,493.79
Step by Step Solution
- Step 1: Write the proportion equation
326,499.49 : 489,938.32 = 136,942.99 : x - Step 2: Convert to fraction form
326,499.49/489,938.32 = 136,942.99/x - Step 3: Cross multiply
326,499.49x = 489,938.32 × 136,942.99 - Step 4: Simplify right side
326,499.49x = 67,093,617,402.71 - Step 5: Solve for x
x = 67,093,617,402.71/326,499.49 - Step 6: Final answer
x = 205,493.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.