Finding the Fourth Proportional to 442,775.40, 664,163.10 and 127,213.80
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Solution
The fourth proportional to 442,775.40, 664,163.10 and 127,213.80 is: 190,820.70
Step by Step Solution
- Step 1: Write the proportion equation
442,775.40 : 664,163.10 = 127,213.80 : x - Step 2: Convert to fraction form
442,775.40/664,163.10 = 127,213.80/x - Step 3: Cross multiply
442,775.40x = 664,163.10 × 127,213.80 - Step 4: Simplify right side
442,775.40x = 84,490,711,770.78 - Step 5: Solve for x
x = 84,490,711,770.78/442,775.40 - Step 6: Final answer
x = 190,820.70
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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.