Finding the Fourth Proportional to 270,609.48, 405,905.82 and 128,556.99
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Solution
The fourth proportional to 270,609.48, 405,905.82 and 128,556.99 is: 192,831.49
Step by Step Solution
- Step 1: Write the proportion equation
270,609.48 : 405,905.82 = 128,556.99 : x - Step 2: Convert to fraction form
270,609.48/405,905.82 = 128,556.99/x - Step 3: Cross multiply
270,609.48x = 405,905.82 × 128,556.99 - Step 4: Simplify right side
270,609.48x = 52,182,030,442.68 - Step 5: Solve for x
x = 52,182,030,442.68/270,609.48 - Step 6: Final answer
x = 192,831.49
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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.