Finding the Fourth Proportional to 449,448.12, 673,911.36 and 212,788.80
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Solution
The fourth proportional to 449,448.12, 673,911.36 and 212,788.80 is: 319,059.72
Step by Step Solution
- Step 1: Write the proportion equation
449,448.12 : 673,911.36 = 212,788.80 : x - Step 2: Convert to fraction form
449,448.12/673,911.36 = 212,788.80/x - Step 3: Cross multiply
449,448.12x = 673,911.36 × 212,788.80 - Step 4: Simplify right side
449,448.12x = 143,400,789,600.77 - Step 5: Solve for x
x = 143,400,789,600.77/449,448.12 - Step 6: Final answer
x = 319,059.72
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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.