Finding the Fourth Proportional to 268,311.80, 402,467.70 and 128,343.80
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Solution
The fourth proportional to 268,311.80, 402,467.70 and 128,343.80 is: 192,515.70
Step by Step Solution
- Step 1: Write the proportion equation
268,311.80 : 402,467.70 = 128,343.80 : x - Step 2: Convert to fraction form
268,311.80/402,467.70 = 128,343.80/x - Step 3: Cross multiply
268,311.80x = 402,467.70 × 128,343.80 - Step 4: Simplify right side
268,311.80x = 51,654,233,995.26 - Step 5: Solve for x
x = 51,654,233,995.26/268,311.80 - Step 6: Final answer
x = 192,515.70
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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.