Finding the Fourth Proportional to 215,808.20, 323,805.60 and 115,851.68
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Solution
The fourth proportional to 215,808.20, 323,805.60 and 115,851.68 is: 173,827.61
Step by Step Solution
- Step 1: Write the proportion equation
215,808.20 : 323,805.60 = 115,851.68 : x - Step 2: Convert to fraction form
215,808.20/323,805.60 = 115,851.68/x - Step 3: Cross multiply
215,808.20x = 323,805.60 × 115,851.68 - Step 4: Simplify right side
215,808.20x = 37,513,422,753.41 - Step 5: Solve for x
x = 37,513,422,753.41/215,808.20 - Step 6: Final answer
x = 173,827.61
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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.