Finding the Fourth Proportional to 402,331.05, 555,220.61 and 221,046.74
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Solution
The fourth proportional to 402,331.05, 555,220.61 and 221,046.74 is: 305,046.57
Step by Step Solution
- Step 1: Write the proportion equation
402,331.05 : 555,220.61 = 221,046.74 : x - Step 2: Convert to fraction form
402,331.05/555,220.61 = 221,046.74/x - Step 3: Cross multiply
402,331.05x = 555,220.61 × 221,046.74 - Step 4: Simplify right side
402,331.05x = 122,729,705,821.31 - Step 5: Solve for x
x = 122,729,705,821.31/402,331.05 - Step 6: Final answer
x = 305,046.57
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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.