Finding the Fourth Proportional to 278,539.28, 418,374.84 and 245,996.72
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Solution
The fourth proportional to 278,539.28, 418,374.84 and 245,996.72 is: 369,494.88
Step by Step Solution
- Step 1: Write the proportion equation
278,539.28 : 418,374.84 = 245,996.72 : x - Step 2: Convert to fraction form
278,539.28/418,374.84 = 245,996.72/x - Step 3: Cross multiply
278,539.28x = 418,374.84 × 245,996.72 - Step 4: Simplify right side
278,539.28x = 102,918,838,370.53 - Step 5: Solve for x
x = 102,918,838,370.53/278,539.28 - Step 6: Final answer
x = 369,494.88
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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.