Finding the Fourth Proportional to 252,297.12, 378,516.96 and 74,803.68
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Solution
The fourth proportional to 252,297.12, 378,516.96 and 74,803.68 is: 112,226.65
Step by Step Solution
- Step 1: Write the proportion equation
252,297.12 : 378,516.96 = 74,803.68 : x - Step 2: Convert to fraction form
252,297.12/378,516.96 = 74,803.68/x - Step 3: Cross multiply
252,297.12x = 378,516.96 × 74,803.68 - Step 4: Simplify right side
252,297.12x = 28,314,461,550.41 - Step 5: Solve for x
x = 28,314,461,550.41/252,297.12 - Step 6: Final answer
x = 112,226.65
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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.