Finding the Fourth Proportional to 345,882.80, 477,236.88 and 209,913.68
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Solution
The fourth proportional to 345,882.80, 477,236.88 and 209,913.68 is: 289,631.49
Step by Step Solution
- Step 1: Write the proportion equation
345,882.80 : 477,236.88 = 209,913.68 : x - Step 2: Convert to fraction form
345,882.80/477,236.88 = 209,913.68/x - Step 3: Cross multiply
345,882.80x = 477,236.88 × 209,913.68 - Step 4: Simplify right side
345,882.80x = 100,178,549,712.52 - Step 5: Solve for x
x = 100,178,549,712.52/345,882.80 - Step 6: Final answer
x = 289,631.49
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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.