Finding the Fourth Proportional to 268,157.60, 402,236.40 and 81,169.10
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Solution
The fourth proportional to 268,157.60, 402,236.40 and 81,169.10 is: 121,753.65
Step by Step Solution
- Step 1: Write the proportion equation
268,157.60 : 402,236.40 = 81,169.10 : x - Step 2: Convert to fraction form
268,157.60/402,236.40 = 81,169.10/x - Step 3: Cross multiply
268,157.60x = 402,236.40 × 81,169.10 - Step 4: Simplify right side
268,157.60x = 32,649,166,575.24 - Step 5: Solve for x
x = 32,649,166,575.24/268,157.60 - Step 6: Final answer
x = 121,753.65
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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.