Finding the Fourth Proportional to 216,733.39, 299,080.05 and 121,221.63
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Solution
The fourth proportional to 216,733.39, 299,080.05 and 121,221.63 is: 167,279.12
Step by Step Solution
- Step 1: Write the proportion equation
216,733.39 : 299,080.05 = 121,221.63 : x - Step 2: Convert to fraction form
216,733.39/299,080.05 = 121,221.63/x - Step 3: Cross multiply
216,733.39x = 299,080.05 × 121,221.63 - Step 4: Simplify right side
216,733.39x = 36,254,970,706.90 - Step 5: Solve for x
x = 36,254,970,706.90/216,733.39 - Step 6: Final answer
x = 167,279.12
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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.