Finding the Fourth Proportional to 420,658.44, 580,559.58 and 239,414.46
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Solution
The fourth proportional to 420,658.44, 580,559.58 and 239,414.46 is: 330,420.94
Step by Step Solution
- Step 1: Write the proportion equation
420,658.44 : 580,559.58 = 239,414.46 : x - Step 2: Convert to fraction form
420,658.44/580,559.58 = 239,414.46/x - Step 3: Cross multiply
420,658.44x = 580,559.58 × 239,414.46 - Step 4: Simplify right side
420,658.44x = 138,994,358,343.53 - Step 5: Solve for x
x = 138,994,358,343.53/420,658.44 - Step 6: Final answer
x = 330,420.94
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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.