Finding the Fourth Proportional to 385,278.12, 531,723.84 and 221,940.28
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Solution
The fourth proportional to 385,278.12, 531,723.84 and 221,940.28 is: 306,300.65
Step by Step Solution
- Step 1: Write the proportion equation
385,278.12 : 531,723.84 = 221,940.28 : x - Step 2: Convert to fraction form
385,278.12/531,723.84 = 221,940.28/x - Step 3: Cross multiply
385,278.12x = 531,723.84 × 221,940.28 - Step 4: Simplify right side
385,278.12x = 118,010,937,932.28 - Step 5: Solve for x
x = 118,010,937,932.28/385,278.12 - Step 6: Final answer
x = 306,300.65
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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.