Finding the Fourth Proportional to 391,516.68, 540,278.58 and 212,664.84
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Solution
The fourth proportional to 391,516.68, 540,278.58 and 212,664.84 is: 293,469.64
Step by Step Solution
- Step 1: Write the proportion equation
391,516.68 : 540,278.58 = 212,664.84 : x - Step 2: Convert to fraction form
391,516.68/540,278.58 = 212,664.84/x - Step 3: Cross multiply
391,516.68x = 540,278.58 × 212,664.84 - Step 4: Simplify right side
391,516.68x = 114,898,257,771.13 - Step 5: Solve for x
x = 114,898,257,771.13/391,516.68 - Step 6: Final answer
x = 293,469.64
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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.