Finding the Fourth Proportional to 291,811.20, 437,716.80 and 125,599.20
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Solution
The fourth proportional to 291,811.20, 437,716.80 and 125,599.20 is: 188,398.80
Step by Step Solution
- Step 1: Write the proportion equation
291,811.20 : 437,716.80 = 125,599.20 : x - Step 2: Convert to fraction form
291,811.20/437,716.80 = 125,599.20/x - Step 3: Cross multiply
291,811.20x = 437,716.80 × 125,599.20 - Step 4: Simplify right side
291,811.20x = 54,976,879,906.56 - Step 5: Solve for x
x = 54,976,879,906.56/291,811.20 - Step 6: Final answer
x = 188,398.80
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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.