Finding the Fourth Proportional to 391,421.10, 587,245.44 and 163,824.09
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Solution
The fourth proportional to 391,421.10, 587,245.44 and 163,824.09 is: 245,783.76
Step by Step Solution
- Step 1: Write the proportion equation
391,421.10 : 587,245.44 = 163,824.09 : x - Step 2: Convert to fraction form
391,421.10/587,245.44 = 163,824.09/x - Step 3: Cross multiply
391,421.10x = 587,245.44 × 163,824.09 - Step 4: Simplify right side
391,421.10x = 96,204,949,814.65 - Step 5: Solve for x
x = 96,204,949,814.65/391,421.10 - Step 6: Final answer
x = 245,783.76
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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.