Finding the Fourth Proportional to 402,728.14, 555,750.60 and 221,438.80
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Solution
The fourth proportional to 402,728.14, 555,750.60 and 221,438.80 is: 305,577.72
Step by Step Solution
- Step 1: Write the proportion equation
402,728.14 : 555,750.60 = 221,438.80 : x - Step 2: Convert to fraction form
402,728.14/555,750.60 = 221,438.80/x - Step 3: Cross multiply
402,728.14x = 555,750.60 × 221,438.80 - Step 4: Simplify right side
402,728.14x = 123,064,745,963.28 - Step 5: Solve for x
x = 123,064,745,963.28/402,728.14 - Step 6: Final answer
x = 305,577.72
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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.