Finding the Fourth Proportional to 251,790.84, 347,471.10 and 138,613.68
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Solution
The fourth proportional to 251,790.84, 347,471.10 and 138,613.68 is: 191,286.74
Step by Step Solution
- Step 1: Write the proportion equation
251,790.84 : 347,471.10 = 138,613.68 : x - Step 2: Convert to fraction form
251,790.84/347,471.10 = 138,613.68/x - Step 3: Cross multiply
251,790.84x = 347,471.10 × 138,613.68 - Step 4: Simplify right side
251,790.84x = 48,164,247,864.65 - Step 5: Solve for x
x = 48,164,247,864.65/251,790.84 - Step 6: Final answer
x = 191,286.74
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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.