Finding the Fourth Proportional to 387,315.41, 534,481.05 and 215,244.08
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Solution
The fourth proportional to 387,315.41, 534,481.05 and 215,244.08 is: 297,028.92
Step by Step Solution
- Step 1: Write the proportion equation
387,315.41 : 534,481.05 = 215,244.08 : x - Step 2: Convert to fraction form
387,315.41/534,481.05 = 215,244.08/x - Step 3: Cross multiply
387,315.41x = 534,481.05 × 215,244.08 - Step 4: Simplify right side
387,315.41x = 115,043,879,212.28 - Step 5: Solve for x
x = 115,043,879,212.28/387,315.41 - Step 6: Final answer
x = 297,028.92
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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.