Finding the Fourth Proportional to 308,242.19, 462,363.28 and 86,626.19
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Solution
The fourth proportional to 308,242.19, 462,363.28 and 86,626.19 is: 129,939.28
Step by Step Solution
- Step 1: Write the proportion equation
308,242.19 : 462,363.28 = 86,626.19 : x - Step 2: Convert to fraction form
308,242.19/462,363.28 = 86,626.19/x - Step 3: Cross multiply
308,242.19x = 462,363.28 × 86,626.19 - Step 4: Simplify right side
308,242.19x = 40,052,769,342.30 - Step 5: Solve for x
x = 40,052,769,342.30/308,242.19 - Step 6: Final answer
x = 129,939.28
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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.