Finding the Fourth Proportional to 216,866.45, 299,239.99 and 136,236.87
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Solution
The fourth proportional to 216,866.45, 299,239.99 and 136,236.87 is: 187,984.45
Step by Step Solution
- Step 1: Write the proportion equation
216,866.45 : 299,239.99 = 136,236.87 : x - Step 2: Convert to fraction form
216,866.45/299,239.99 = 136,236.87/x - Step 3: Cross multiply
216,866.45x = 299,239.99 × 136,236.87 - Step 4: Simplify right side
216,866.45x = 40,767,519,616.43 - Step 5: Solve for x
x = 40,767,519,616.43/216,866.45 - Step 6: Final answer
x = 187,984.45
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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.