Finding the Fourth Proportional to 345,335.21, 518,356.28 and 285,171.99
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Solution
The fourth proportional to 345,335.21, 518,356.28 and 285,171.99 is: 428,049.88
Step by Step Solution
- Step 1: Write the proportion equation
345,335.21 : 518,356.28 = 285,171.99 : x - Step 2: Convert to fraction form
345,335.21/518,356.28 = 285,171.99/x - Step 3: Cross multiply
345,335.21x = 518,356.28 × 285,171.99 - Step 4: Simplify right side
345,335.21x = 147,820,692,609.53 - Step 5: Solve for x
x = 147,820,692,609.53/345,335.21 - Step 6: Final answer
x = 428,049.88
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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.