Finding the Fourth Proportional to 385,641.36, 578,107.76 and 132,861.75
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Solution
The fourth proportional to 385,641.36, 578,107.76 and 132,861.75 is: 199,170.57
Step by Step Solution
- Step 1: Write the proportion equation
385,641.36 : 578,107.76 = 132,861.75 : x - Step 2: Convert to fraction form
385,641.36/578,107.76 = 132,861.75/x - Step 3: Cross multiply
385,641.36x = 578,107.76 × 132,861.75 - Step 4: Simplify right side
385,641.36x = 76,808,408,017.87 - Step 5: Solve for x
x = 76,808,408,017.87/385,641.36 - Step 6: Final answer
x = 199,170.57
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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.