Finding the Fourth Proportional to 391,205.80, 586,808.70 and 201,665.80
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Solution
The fourth proportional to 391,205.80, 586,808.70 and 201,665.80 is: 302,498.70
Step by Step Solution
- Step 1: Write the proportion equation
391,205.80 : 586,808.70 = 201,665.80 : x - Step 2: Convert to fraction form
391,205.80/586,808.70 = 201,665.80/x - Step 3: Cross multiply
391,205.80x = 586,808.70 × 201,665.80 - Step 4: Simplify right side
391,205.80x = 118,339,245,932.46 - Step 5: Solve for x
x = 118,339,245,932.46/391,205.80 - Step 6: Final answer
x = 302,498.70
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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.