Finding the Fourth Proportional to 286,874.40, 430,311.60 and 207,616.80
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Solution
The fourth proportional to 286,874.40, 430,311.60 and 207,616.80 is: 311,425.20
Step by Step Solution
- Step 1: Write the proportion equation
286,874.40 : 430,311.60 = 207,616.80 : x - Step 2: Convert to fraction form
286,874.40/430,311.60 = 207,616.80/x - Step 3: Cross multiply
286,874.40x = 430,311.60 × 207,616.80 - Step 4: Simplify right side
286,874.40x = 89,339,917,394.88 - Step 5: Solve for x
x = 89,339,917,394.88/286,874.40 - Step 6: Final answer
x = 311,425.20
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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.