Finding the Fourth Proportional to 192,617.40, 288,926.10 and 129,631.80
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Solution
The fourth proportional to 192,617.40, 288,926.10 and 129,631.80 is: 194,447.70
Step by Step Solution
- Step 1: Write the proportion equation
192,617.40 : 288,926.10 = 129,631.80 : x - Step 2: Convert to fraction form
192,617.40/288,926.10 = 129,631.80/x - Step 3: Cross multiply
192,617.40x = 288,926.10 × 129,631.80 - Step 4: Simplify right side
192,617.40x = 37,454,010,409.98 - Step 5: Solve for x
x = 37,454,010,409.98/192,617.40 - Step 6: Final answer
x = 194,447.70
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1.5x scale
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.