Finding the Fourth Proportional to 239,478.27, 330,502.19 and 137,517.09
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Solution
The fourth proportional to 239,478.27, 330,502.19 and 137,517.09 is: 189,786.32
Step by Step Solution
- Step 1: Write the proportion equation
239,478.27 : 330,502.19 = 137,517.09 : x - Step 2: Convert to fraction form
239,478.27/330,502.19 = 137,517.09/x - Step 3: Cross multiply
239,478.27x = 330,502.19 × 137,517.09 - Step 4: Simplify right side
239,478.27x = 45,449,698,719.84 - Step 5: Solve for x
x = 45,449,698,719.84/239,478.27 - Step 6: Final answer
x = 189,786.32
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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.