Finding the Fourth Proportional to 393,832.08, 543,416.58 and 221,723.28
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Solution
The fourth proportional to 393,832.08, 543,416.58 and 221,723.28 is: 305,937.77
Step by Step Solution
- Step 1: Write the proportion equation
393,832.08 : 543,416.58 = 221,723.28 : x - Step 2: Convert to fraction form
393,832.08/543,416.58 = 221,723.28/x - Step 3: Cross multiply
393,832.08x = 543,416.58 × 221,723.28 - Step 4: Simplify right side
393,832.08x = 120,488,106,523.98 - Step 5: Solve for x
x = 120,488,106,523.98/393,832.08 - Step 6: Final answer
x = 305,937.77
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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.