Finding the Fourth Proportional to 220,728.24, 304,599.24 and 128,865.12
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Solution
The fourth proportional to 220,728.24, 304,599.24 and 128,865.12 is: 177,830.52
Step by Step Solution
- Step 1: Write the proportion equation
220,728.24 : 304,599.24 = 128,865.12 : x - Step 2: Convert to fraction form
220,728.24/304,599.24 = 128,865.12/x - Step 3: Cross multiply
220,728.24x = 304,599.24 × 128,865.12 - Step 4: Simplify right side
220,728.24x = 39,252,217,614.51 - Step 5: Solve for x
x = 39,252,217,614.51/220,728.24 - Step 6: Final answer
x = 177,830.52
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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.