Finding the Fourth Proportional to 402,348.70, 555,241.92 and 221,059.05
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Solution
The fourth proportional to 402,348.70, 555,241.92 and 221,059.05 is: 305,061.88
Step by Step Solution
- Step 1: Write the proportion equation
402,348.70 : 555,241.92 = 221,059.05 : x - Step 2: Convert to fraction form
402,348.70/555,241.92 = 221,059.05/x - Step 3: Cross multiply
402,348.70x = 555,241.92 × 221,059.05 - Step 4: Simplify right side
402,348.70x = 122,741,251,355.38 - Step 5: Solve for x
x = 122,741,251,355.38/402,348.70 - Step 6: Final answer
x = 305,061.88
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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.