Finding the Fourth Proportional to 253,715.68, 380,631.18 and 85,223.08
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Solution
The fourth proportional to 253,715.68, 380,631.18 and 85,223.08 is: 127,853.99
Step by Step Solution
- Step 1: Write the proportion equation
253,715.68 : 380,631.18 = 85,223.08 : x - Step 2: Convert to fraction form
253,715.68/380,631.18 = 85,223.08/x - Step 3: Cross multiply
253,715.68x = 380,631.18 × 85,223.08 - Step 4: Simplify right side
253,715.68x = 32,438,561,503.63 - Step 5: Solve for x
x = 32,438,561,503.63/253,715.68 - Step 6: Final answer
x = 127,853.99
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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.