Finding the Fourth Proportional to 457,115.54, 686,115.57 and 220,624.70
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Solution
The fourth proportional to 457,115.54, 686,115.57 and 220,624.70 is: 331,150.50
Step by Step Solution
- Step 1: Write the proportion equation
457,115.54 : 686,115.57 = 220,624.70 : x - Step 2: Convert to fraction form
457,115.54/686,115.57 = 220,624.70/x - Step 3: Cross multiply
457,115.54x = 686,115.57 × 220,624.70 - Step 4: Simplify right side
457,115.54x = 151,374,041,796.58 - Step 5: Solve for x
x = 151,374,041,796.58/457,115.54 - Step 6: Final answer
x = 331,150.50
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1.5x scale
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.