Finding the Fourth Proportional to 305,661.97, 458,345.49 and 128,121.31
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Solution
The fourth proportional to 305,661.97, 458,345.49 and 128,121.31 is: 192,120.15
Step by Step Solution
- Step 1: Write the proportion equation
305,661.97 : 458,345.49 = 128,121.31 : x - Step 2: Convert to fraction form
305,661.97/458,345.49 = 128,121.31/x - Step 3: Cross multiply
305,661.97x = 458,345.49 × 128,121.31 - Step 4: Simplify right side
305,661.97x = 58,723,824,703.87 - Step 5: Solve for x
x = 58,723,824,703.87/305,661.97 - Step 6: Final answer
x = 192,120.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.