Finding the Fourth Proportional to 402,310.96, 555,186.80 and 221,018.96
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Solution
The fourth proportional to 402,310.96, 555,186.80 and 221,018.96 is: 305,004.89
Step by Step Solution
- Step 1: Write the proportion equation
402,310.96 : 555,186.80 = 221,018.96 : x - Step 2: Convert to fraction form
402,310.96/555,186.80 = 221,018.96/x - Step 3: Cross multiply
402,310.96x = 555,186.80 × 221,018.96 - Step 4: Simplify right side
402,310.96x = 122,706,809,141.73 - Step 5: Solve for x
x = 122,706,809,141.73/402,310.96 - Step 6: Final answer
x = 305,004.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.