Finding the Fourth Proportional to 209,206.80, 313,634.52 and 145,840.68
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Solution
The fourth proportional to 209,206.80, 313,634.52 and 145,840.68 is: 218,638.55
Step by Step Solution
- Step 1: Write the proportion equation
209,206.80 : 313,634.52 = 145,840.68 : x - Step 2: Convert to fraction form
209,206.80/313,634.52 = 145,840.68/x - Step 3: Cross multiply
209,206.80x = 313,634.52 × 145,840.68 - Step 4: Simplify right side
209,206.80x = 45,740,671,668.27 - Step 5: Solve for x
x = 45,740,671,668.27/209,206.80 - Step 6: Final answer
x = 218,638.55
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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.