Finding the Fourth Proportional to 326,478.24, 489,661.92 and 148,943.52
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Solution
The fourth proportional to 326,478.24, 489,661.92 and 148,943.52 is: 223,389.99
Step by Step Solution
- Step 1: Write the proportion equation
326,478.24 : 489,661.92 = 148,943.52 : x - Step 2: Convert to fraction form
326,478.24/489,661.92 = 148,943.52/x - Step 3: Cross multiply
326,478.24x = 489,661.92 × 148,943.52 - Step 4: Simplify right side
326,478.24x = 72,931,969,974.76 - Step 5: Solve for x
x = 72,931,969,974.76/326,478.24 - Step 6: Final answer
x = 223,389.99
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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.