Finding the Fourth Proportional to 402,617.13, 555,611.43 and 221,340.75
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Solution
The fourth proportional to 402,617.13, 555,611.43 and 221,340.75 is: 305,450.12
Step by Step Solution
- Step 1: Write the proportion equation
402,617.13 : 555,611.43 = 221,340.75 : x - Step 2: Convert to fraction form
402,617.13/555,611.43 = 221,340.75/x - Step 3: Cross multiply
402,617.13x = 555,611.43 × 221,340.75 - Step 4: Simplify right side
402,617.13x = 122,979,450,624.77 - Step 5: Solve for x
x = 122,979,450,624.77/402,617.13 - Step 6: Final answer
x = 305,450.12
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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.