Finding the Fourth Proportional to 402,724.14, 555,745.08 and 221,434.80
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Solution
The fourth proportional to 402,724.14, 555,745.08 and 221,434.80 is: 305,572.20
Step by Step Solution
- Step 1: Write the proportion equation
402,724.14 : 555,745.08 = 221,434.80 : x - Step 2: Convert to fraction form
402,724.14/555,745.08 = 221,434.80/x - Step 3: Cross multiply
402,724.14x = 555,745.08 × 221,434.80 - Step 4: Simplify right side
402,724.14x = 123,061,300,640.78 - Step 5: Solve for x
x = 123,061,300,640.78/402,724.14 - Step 6: Final answer
x = 305,572.20
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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.