Finding the Fourth Proportional to 378,374.80, 521,861.99 and 242,421.49
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Solution
The fourth proportional to 378,374.80, 521,861.99 and 242,421.49 is: 334,352.49
Step by Step Solution
- Step 1: Write the proportion equation
378,374.80 : 521,861.99 = 242,421.49 : x - Step 2: Convert to fraction form
378,374.80/521,861.99 = 242,421.49/x - Step 3: Cross multiply
378,374.80x = 521,861.99 × 242,421.49 - Step 4: Simplify right side
378,374.80x = 126,510,557,694.91 - Step 5: Solve for x
x = 126,510,557,694.91/378,374.80 - Step 6: Final answer
x = 334,352.49
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1.5x scale
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.