Finding the Fourth Proportional to 252,431.40, 378,647.10 and 74,965.80
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Solution
The fourth proportional to 252,431.40, 378,647.10 and 74,965.80 is: 112,448.70
Step by Step Solution
- Step 1: Write the proportion equation
252,431.40 : 378,647.10 = 74,965.80 : x - Step 2: Convert to fraction form
252,431.40/378,647.10 = 74,965.80/x - Step 3: Cross multiply
252,431.40x = 378,647.10 × 74,965.80 - Step 4: Simplify right side
252,431.40x = 28,385,582,769.18 - Step 5: Solve for x
x = 28,385,582,769.18/252,431.40 - Step 6: Final answer
x = 112,448.70
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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.