Finding the Fourth Proportional to 275,484.51, 380,139.41 and 154,639.09
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Solution
The fourth proportional to 275,484.51, 380,139.41 and 154,639.09 is: 213,385.55
Step by Step Solution
- Step 1: Write the proportion equation
275,484.51 : 380,139.41 = 154,639.09 : x - Step 2: Convert to fraction form
275,484.51/380,139.41 = 154,639.09/x - Step 3: Cross multiply
275,484.51x = 380,139.41 × 154,639.09 - Step 4: Simplify right side
275,484.51x = 58,784,412,435.54 - Step 5: Solve for x
x = 58,784,412,435.54/275,484.51 - Step 6: Final answer
x = 213,385.55
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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.