Finding the Fourth Proportional to 393,116.96, 542,515.92 and 223,379.84
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Solution
The fourth proportional to 393,116.96, 542,515.92 and 223,379.84 is: 308,272.43
Step by Step Solution
- Step 1: Write the proportion equation
393,116.96 : 542,515.92 = 223,379.84 : x - Step 2: Convert to fraction form
393,116.96/542,515.92 = 223,379.84/x - Step 3: Cross multiply
393,116.96x = 542,515.92 × 223,379.84 - Step 4: Simplify right side
393,116.96x = 121,187,119,407.05 - Step 5: Solve for x
x = 121,187,119,407.05/393,116.96 - Step 6: Final answer
x = 308,272.43
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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.