Finding the Fourth Proportional to 216,684.18, 299,024.96 and 121,184.78
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Solution
The fourth proportional to 216,684.18, 299,024.96 and 121,184.78 is: 167,235.43
Step by Step Solution
- Step 1: Write the proportion equation
216,684.18 : 299,024.96 = 121,184.78 : x - Step 2: Convert to fraction form
216,684.18/299,024.96 = 121,184.78/x - Step 3: Cross multiply
216,684.18x = 299,024.96 × 121,184.78 - Step 4: Simplify right side
216,684.18x = 36,237,271,891.06 - Step 5: Solve for x
x = 36,237,271,891.06/216,684.18 - Step 6: Final answer
x = 167,235.43
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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.