Finding the Fourth Proportional to 253,986.15, 350,487.41 and 145,069.09
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Solution
The fourth proportional to 253,986.15, 350,487.41 and 145,069.09 is: 200,187.65
Step by Step Solution
- Step 1: Write the proportion equation
253,986.15 : 350,487.41 = 145,069.09 : x - Step 2: Convert to fraction form
253,986.15/350,487.41 = 145,069.09/x - Step 3: Cross multiply
253,986.15x = 350,487.41 × 145,069.09 - Step 4: Simplify right side
253,986.15x = 50,844,888,899.81 - Step 5: Solve for x
x = 50,844,888,899.81/253,986.15 - Step 6: Final answer
x = 200,187.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.