Finding the Fourth Proportional to 209,358.23, 313,910.91 and 93,931.65
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Solution
The fourth proportional to 209,358.23, 313,910.91 and 93,931.65 is: 140,840.75
Step by Step Solution
- Step 1: Write the proportion equation
209,358.23 : 313,910.91 = 93,931.65 : x - Step 2: Convert to fraction form
209,358.23/313,910.91 = 93,931.65/x - Step 3: Cross multiply
209,358.23x = 313,910.91 × 93,931.65 - Step 4: Simplify right side
209,358.23x = 29,486,169,729.30 - Step 5: Solve for x
x = 29,486,169,729.30/209,358.23 - Step 6: Final answer
x = 140,840.75
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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.