Finding the Fourth Proportional to 398,794.19, 598,251.02 and 128,832.12
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Solution
The fourth proportional to 398,794.19, 598,251.02 and 128,832.12 is: 193,267.48
Step by Step Solution
- Step 1: Write the proportion equation
398,794.19 : 598,251.02 = 128,832.12 : x - Step 2: Convert to fraction form
398,794.19/598,251.02 = 128,832.12/x - Step 3: Cross multiply
398,794.19x = 598,251.02 × 128,832.12 - Step 4: Simplify right side
398,794.19x = 77,073,946,554.60 - Step 5: Solve for x
x = 77,073,946,554.60/398,794.19 - Step 6: Final answer
x = 193,267.48
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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.