Finding the Fourth Proportional to 208,099.80, 312,149.70 and 154,955.70
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Solution
The fourth proportional to 208,099.80, 312,149.70 and 154,955.70 is: 232,433.55
Step by Step Solution
- Step 1: Write the proportion equation
208,099.80 : 312,149.70 = 154,955.70 : x - Step 2: Convert to fraction form
208,099.80/312,149.70 = 154,955.70/x - Step 3: Cross multiply
208,099.80x = 312,149.70 × 154,955.70 - Step 4: Simplify right side
208,099.80x = 48,369,375,268.29 - Step 5: Solve for x
x = 48,369,375,268.29/208,099.80 - Step 6: Final answer
x = 232,433.55
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1.5x scale
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.