Finding the Fourth Proportional to 305,769.21, 422,161.35 and 198,644.55
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Solution
The fourth proportional to 305,769.21, 422,161.35 and 198,644.55 is: 274,259.31
Step by Step Solution
- Step 1: Write the proportion equation
305,769.21 : 422,161.35 = 198,644.55 : x - Step 2: Convert to fraction form
305,769.21/422,161.35 = 198,644.55/x - Step 3: Cross multiply
305,769.21x = 422,161.35 × 198,644.55 - Step 4: Simplify right side
305,769.21x = 83,860,051,398.14 - Step 5: Solve for x
x = 83,860,051,398.14/305,769.21 - Step 6: Final answer
x = 274,259.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.