Finding the Fourth Proportional to 252,170.84, 378,203.88 and 74,636.21
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Solution
The fourth proportional to 252,170.84, 378,203.88 and 74,636.21 is: 111,938.81
Step by Step Solution
- Step 1: Write the proportion equation
252,170.84 : 378,203.88 = 74,636.21 : x - Step 2: Convert to fraction form
252,170.84/378,203.88 = 74,636.21/x - Step 3: Cross multiply
252,170.84x = 378,203.88 × 74,636.21 - Step 4: Simplify right side
252,170.84x = 28,227,704,210.49 - Step 5: Solve for x
x = 28,227,704,210.49/252,170.84 - Step 6: Final answer
x = 111,938.81
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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.