Finding the Fourth Proportional to 261,627.20, 391,857.60 and 202,140.80
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Solution
The fourth proportional to 261,627.20, 391,857.60 and 202,140.80 is: 302,760.60
Step by Step Solution
- Step 1: Write the proportion equation
261,627.20 : 391,857.60 = 202,140.80 : x - Step 2: Convert to fraction form
261,627.20/391,857.60 = 202,140.80/x - Step 3: Cross multiply
261,627.20x = 391,857.60 × 202,140.80 - Step 4: Simplify right side
261,627.20x = 79,210,408,750.08 - Step 5: Solve for x
x = 79,210,408,750.08/261,627.20 - Step 6: Final answer
x = 302,760.60
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1.5x scale
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.