Finding the Fourth Proportional to 326,718.28, 489,617.68 and 259,861.68
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Solution
The fourth proportional to 326,718.28, 489,617.68 and 259,861.68 is: 389,426.86
Step by Step Solution
- Step 1: Write the proportion equation
326,718.28 : 489,617.68 = 259,861.68 : x - Step 2: Convert to fraction form
326,718.28/489,617.68 = 259,861.68/x - Step 3: Cross multiply
326,718.28x = 489,617.68 × 259,861.68 - Step 4: Simplify right side
326,718.28x = 127,232,872,882.50 - Step 5: Solve for x
x = 127,232,872,882.50/326,718.28 - Step 6: Final answer
x = 389,426.86
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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.