Finding the Fourth Proportional to 190,988.40, 286,293.60 and 84,430.20
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Solution
The fourth proportional to 190,988.40, 286,293.60 and 84,430.20 is: 126,561.75
Step by Step Solution
- Step 1: Write the proportion equation
190,988.40 : 286,293.60 = 84,430.20 : x - Step 2: Convert to fraction form
190,988.40/286,293.60 = 84,430.20/x - Step 3: Cross multiply
190,988.40x = 286,293.60 × 84,430.20 - Step 4: Simplify right side
190,988.40x = 24,171,825,906.72 - Step 5: Solve for x
x = 24,171,825,906.72/190,988.40 - Step 6: Final answer
x = 126,561.75
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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.