Finding the Fourth Proportional to 521,478.70, 782,340.10 and 161,630.75
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Solution
The fourth proportional to 521,478.70, 782,340.10 and 161,630.75 is: 242,483.95
Step by Step Solution
- Step 1: Write the proportion equation
521,478.70 : 782,340.10 = 161,630.75 : x - Step 2: Convert to fraction form
521,478.70/782,340.10 = 161,630.75/x - Step 3: Cross multiply
521,478.70x = 782,340.10 × 161,630.75 - Step 4: Simplify right side
521,478.70x = 126,450,217,118.08 - Step 5: Solve for x
x = 126,450,217,118.08/521,478.70 - Step 6: Final answer
x = 242,483.95
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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.