Finding the Fourth Proportional to 268,113.20, 402,169.80 and 198,129.20
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Solution
The fourth proportional to 268,113.20, 402,169.80 and 198,129.20 is: 297,193.80
Step by Step Solution
- Step 1: Write the proportion equation
268,113.20 : 402,169.80 = 198,129.20 : x - Step 2: Convert to fraction form
268,113.20/402,169.80 = 198,129.20/x - Step 3: Cross multiply
268,113.20x = 402,169.80 × 198,129.20 - Step 4: Simplify right side
268,113.20x = 79,681,580,738.16 - Step 5: Solve for x
x = 79,681,580,738.16/268,113.20 - Step 6: Final answer
x = 297,193.80
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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.