Finding the Fourth Proportional to 280,291.37, 420,186.99 and 102,756.92
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Solution
The fourth proportional to 280,291.37, 420,186.99 and 102,756.92 is: 154,043.70
Step by Step Solution
- Step 1: Write the proportion equation
280,291.37 : 420,186.99 = 102,756.92 : x - Step 2: Convert to fraction form
280,291.37/420,186.99 = 102,756.92/x - Step 3: Cross multiply
280,291.37x = 420,186.99 × 102,756.92 - Step 4: Simplify right side
280,291.37x = 43,177,120,916.47 - Step 5: Solve for x
x = 43,177,120,916.47/280,291.37 - Step 6: Final answer
x = 154,043.70
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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.