Finding the Fourth Proportional to 239,619.81, 330,615.90 and 157,939.01
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Solution
The fourth proportional to 239,619.81, 330,615.90 and 157,939.01 is: 217,916.65
Step by Step Solution
- Step 1: Write the proportion equation
239,619.81 : 330,615.90 = 157,939.01 : x - Step 2: Convert to fraction form
239,619.81/330,615.90 = 157,939.01/x - Step 3: Cross multiply
239,619.81x = 330,615.90 × 157,939.01 - Step 4: Simplify right side
239,619.81x = 52,217,146,283.18 - Step 5: Solve for x
x = 52,217,146,283.18/239,619.81 - Step 6: Final answer
x = 217,916.65
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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.