Finding the Fourth Proportional to 328,207.80, 492,311.70 and 275,719.80
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Solution
The fourth proportional to 328,207.80, 492,311.70 and 275,719.80 is: 413,579.70
Step by Step Solution
- Step 1: Write the proportion equation
328,207.80 : 492,311.70 = 275,719.80 : x - Step 2: Convert to fraction form
328,207.80/492,311.70 = 275,719.80/x - Step 3: Cross multiply
328,207.80x = 492,311.70 × 275,719.80 - Step 4: Simplify right side
328,207.80x = 135,740,083,461.66 - Step 5: Solve for x
x = 135,740,083,461.66/328,207.80 - Step 6: Final answer
x = 413,579.70
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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.