Finding the Fourth Proportional to 268,934.20, 402,710.10 and 198,431.80
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Solution
The fourth proportional to 268,934.20, 402,710.10 and 198,431.80 is: 297,137.70
Step by Step Solution
- Step 1: Write the proportion equation
268,934.20 : 402,710.10 = 198,431.80 : x - Step 2: Convert to fraction form
268,934.20/402,710.10 = 198,431.80/x - Step 3: Cross multiply
268,934.20x = 402,710.10 × 198,431.80 - Step 4: Simplify right side
268,934.20x = 79,910,490,021.18 - Step 5: Solve for x
x = 79,910,490,021.18/268,934.20 - Step 6: Final answer
x = 297,137.70
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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.