Finding the Fourth Proportional to 207,138.12, 310,491.72 and 140,583.68
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Solution
The fourth proportional to 207,138.12, 310,491.72 and 140,583.68 is: 210,729.29
Step by Step Solution
- Step 1: Write the proportion equation
207,138.12 : 310,491.72 = 140,583.68 : x - Step 2: Convert to fraction form
207,138.12/310,491.72 = 140,583.68/x - Step 3: Cross multiply
207,138.12x = 310,491.72 × 140,583.68 - Step 4: Simplify right side
207,138.12x = 43,650,068,607.13 - Step 5: Solve for x
x = 43,650,068,607.13/207,138.12 - Step 6: Final answer
x = 210,729.29
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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.