Finding the Fourth Proportional to 211,712.99, 317,154.29 and 122,779.65
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Solution
The fourth proportional to 211,712.99, 317,154.29 and 122,779.65 is: 183,928.68
Step by Step Solution
- Step 1: Write the proportion equation
211,712.99 : 317,154.29 = 122,779.65 : x - Step 2: Convert to fraction form
211,712.99/317,154.29 = 122,779.65/x - Step 3: Cross multiply
211,712.99x = 317,154.29 × 122,779.65 - Step 4: Simplify right side
211,712.99x = 38,940,092,108.30 - Step 5: Solve for x
x = 38,940,092,108.30/211,712.99 - Step 6: Final answer
x = 183,928.68
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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.