Finding the Fourth Proportional to 420,748.20, 580,687.38 and 239,424.84
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Solution
The fourth proportional to 420,748.20, 580,687.38 and 239,424.84 is: 330,437.50
Step by Step Solution
- Step 1: Write the proportion equation
420,748.20 : 580,687.38 = 239,424.84 : x - Step 2: Convert to fraction form
420,748.20/580,687.38 = 239,424.84/x - Step 3: Cross multiply
420,748.20x = 580,687.38 × 239,424.84 - Step 4: Simplify right side
420,748.20x = 139,030,983,046.52 - Step 5: Solve for x
x = 139,030,983,046.52/420,748.20 - Step 6: Final answer
x = 330,437.50
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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.