Finding the Fourth Proportional to 280,444.41, 420,755.13 and 213,298.09
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Solution
The fourth proportional to 280,444.41, 420,755.13 and 213,298.09 is: 320,014.46
Step by Step Solution
- Step 1: Write the proportion equation
280,444.41 : 420,755.13 = 213,298.09 : x - Step 2: Convert to fraction form
280,444.41/420,755.13 = 213,298.09/x - Step 3: Cross multiply
280,444.41x = 420,755.13 × 213,298.09 - Step 4: Simplify right side
280,444.41x = 89,746,265,586.70 - Step 5: Solve for x
x = 89,746,265,586.70/280,444.41 - Step 6: Final answer
x = 320,014.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.