Finding the Fourth Proportional to 543,813.12, 815,719.68 and 211,466.88
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Solution
The fourth proportional to 543,813.12, 815,719.68 and 211,466.88 is: 317,200.32
Step by Step Solution
- Step 1: Write the proportion equation
543,813.12 : 815,719.68 = 211,466.88 : x - Step 2: Convert to fraction form
543,813.12/815,719.68 = 211,466.88/x - Step 3: Cross multiply
543,813.12x = 815,719.68 × 211,466.88 - Step 4: Simplify right side
543,813.12x = 172,497,695,684.20 - Step 5: Solve for x
x = 172,497,695,684.20/543,813.12 - Step 6: Final answer
x = 317,200.32
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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.