Finding the Fourth Proportional to 208,415.49, 312,649.70 and 66,210.05
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Solution
The fourth proportional to 208,415.49, 312,649.70 and 66,210.05 is: 99,323.47
Step by Step Solution
- Step 1: Write the proportion equation
208,415.49 : 312,649.70 = 66,210.05 : x - Step 2: Convert to fraction form
208,415.49/312,649.70 = 66,210.05/x - Step 3: Cross multiply
208,415.49x = 312,649.70 × 66,210.05 - Step 4: Simplify right side
208,415.49x = 20,700,550,375.19 - Step 5: Solve for x
x = 20,700,550,375.19/208,415.49 - Step 6: Final answer
x = 99,323.47
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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.