Finding the Fourth Proportional to 216,865.81, 299,239.11 and 136,236.23
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Solution
The fourth proportional to 216,865.81, 299,239.11 and 136,236.23 is: 187,983.57
Step by Step Solution
- Step 1: Write the proportion equation
216,865.81 : 299,239.11 = 136,236.23 : x - Step 2: Convert to fraction form
216,865.81/299,239.11 = 136,236.23/x - Step 3: Cross multiply
216,865.81x = 299,239.11 × 136,236.23 - Step 4: Simplify right side
216,865.81x = 40,767,208,214.96 - Step 5: Solve for x
x = 40,767,208,214.96/216,865.81 - Step 6: Final answer
x = 187,983.57
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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.