Finding the Fourth Proportional to 398,551.20, 598,748.40 and 274,135.20
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Solution
The fourth proportional to 398,551.20, 598,748.40 and 274,135.20 is: 411,836.70
Step by Step Solution
- Step 1: Write the proportion equation
398,551.20 : 598,748.40 = 274,135.20 : x - Step 2: Convert to fraction form
398,551.20/598,748.40 = 274,135.20/x - Step 3: Cross multiply
398,551.20x = 598,748.40 × 274,135.20 - Step 4: Simplify right side
398,551.20x = 164,138,012,383.68 - Step 5: Solve for x
x = 164,138,012,383.68/398,551.20 - Step 6: Final answer
x = 411,836.70
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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.