Finding the Fourth Proportional to 305,693.75, 458,393.11 and 128,153.09
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Solution
The fourth proportional to 305,693.75, 458,393.11 and 128,153.09 is: 192,167.79
Step by Step Solution
- Step 1: Write the proportion equation
305,693.75 : 458,393.11 = 128,153.09 : x - Step 2: Convert to fraction form
305,693.75/458,393.11 = 128,153.09/x - Step 3: Cross multiply
305,693.75x = 458,393.11 × 128,153.09 - Step 4: Simplify right side
305,693.75x = 58,744,494,306.81 - Step 5: Solve for x
x = 58,744,494,306.81/305,693.75 - Step 6: Final answer
x = 192,167.79
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1.5x scale
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.