Finding the Fourth Proportional to 307,639.20, 461,531.70 and 157,902.60
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Solution
The fourth proportional to 307,639.20, 461,531.70 and 157,902.60 is: 236,891.32
Step by Step Solution
- Step 1: Write the proportion equation
307,639.20 : 461,531.70 = 157,902.60 : x - Step 2: Convert to fraction form
307,639.20/461,531.70 = 157,902.60/x - Step 3: Cross multiply
307,639.20x = 461,531.70 × 157,902.60 - Step 4: Simplify right side
307,639.20x = 72,877,055,412.42 - Step 5: Solve for x
x = 72,877,055,412.42/307,639.20 - Step 6: Final answer
x = 236,891.32
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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.