Finding the Fourth Proportional to 398,721.12, 598,197.12 and 118,245.12
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Solution
The fourth proportional to 398,721.12, 598,197.12 and 118,245.12 is: 177,401.91
Step by Step Solution
- Step 1: Write the proportion equation
398,721.12 : 598,197.12 = 118,245.12 : x - Step 2: Convert to fraction form
398,721.12/598,197.12 = 118,245.12/x - Step 3: Cross multiply
398,721.12x = 598,197.12 × 118,245.12 - Step 4: Simplify right side
398,721.12x = 70,733,890,238.05 - Step 5: Solve for x
x = 70,733,890,238.05/398,721.12 - Step 6: Final answer
x = 177,401.91
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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.