Finding the Fourth Proportional to 192,607.40, 288,911.10 and 129,621.80
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Solution
The fourth proportional to 192,607.40, 288,911.10 and 129,621.80 is: 194,432.70
Step by Step Solution
- Step 1: Write the proportion equation
192,607.40 : 288,911.10 = 129,621.80 : x - Step 2: Convert to fraction form
192,607.40/288,911.10 = 129,621.80/x - Step 3: Cross multiply
192,607.40x = 288,911.10 × 129,621.80 - Step 4: Simplify right side
192,607.40x = 37,449,176,821.98 - Step 5: Solve for x
x = 37,449,176,821.98/192,607.40 - Step 6: Final answer
x = 194,432.70
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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.