Finding the Fourth Proportional to 221,122.95, 305,149.77 and 125,629.80
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Solution
The fourth proportional to 221,122.95, 305,149.77 and 125,629.80 is: 173,369.18
Step by Step Solution
- Step 1: Write the proportion equation
221,122.95 : 305,149.77 = 125,629.80 : x - Step 2: Convert to fraction form
221,122.95/305,149.77 = 125,629.80/x - Step 3: Cross multiply
221,122.95x = 305,149.77 × 125,629.80 - Step 4: Simplify right side
221,122.95x = 38,335,904,575.15 - Step 5: Solve for x
x = 38,335,904,575.15/221,122.95 - Step 6: Final answer
x = 173,369.18
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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.