Finding the Fourth Proportional to 393,247.75, 542,634.20 and 218,776.68
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Solution
The fourth proportional to 393,247.75, 542,634.20 and 218,776.68 is: 301,885.28
Step by Step Solution
- Step 1: Write the proportion equation
393,247.75 : 542,634.20 = 218,776.68 : x - Step 2: Convert to fraction form
393,247.75/542,634.20 = 218,776.68/x - Step 3: Cross multiply
393,247.75x = 542,634.20 × 218,776.68 - Step 4: Simplify right side
393,247.75x = 118,715,708,730.46 - Step 5: Solve for x
x = 118,715,708,730.46/393,247.75 - Step 6: Final answer
x = 301,885.28
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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.