Finding the Fourth Proportional to 457,115.42, 686,115.39 and 220,624.58
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Solution
The fourth proportional to 457,115.42, 686,115.39 and 220,624.58 is: 331,150.32
Step by Step Solution
- Step 1: Write the proportion equation
457,115.42 : 686,115.39 = 220,624.58 : x - Step 2: Convert to fraction form
457,115.42/686,115.39 = 220,624.58/x - Step 3: Cross multiply
457,115.42x = 686,115.39 × 220,624.58 - Step 4: Simplify right side
457,115.42x = 151,373,915,216.59 - Step 5: Solve for x
x = 151,373,915,216.59/457,115.42 - Step 6: Final answer
x = 331,150.32
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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.