Finding the Fourth Proportional to 312,700.68, 431,573.22 and 197,989.99
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Solution
The fourth proportional to 312,700.68, 431,573.22 and 197,989.99 is: 273,255.48
Step by Step Solution
- Step 1: Write the proportion equation
312,700.68 : 431,573.22 = 197,989.99 : x - Step 2: Convert to fraction form
312,700.68/431,573.22 = 197,989.99/x - Step 3: Cross multiply
312,700.68x = 431,573.22 × 197,989.99 - Step 4: Simplify right side
312,700.68x = 85,447,176,433.13 - Step 5: Solve for x
x = 85,447,176,433.13/312,700.68 - Step 6: Final answer
x = 273,255.48
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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.