Finding the Fourth Proportional to 211,605.12, 316,992.24 and 122,671.68
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Solution
The fourth proportional to 211,605.12, 316,992.24 and 122,671.68 is: 183,766.68
Step by Step Solution
- Step 1: Write the proportion equation
211,605.12 : 316,992.24 = 122,671.68 : x - Step 2: Convert to fraction form
211,605.12/316,992.24 = 122,671.68/x - Step 3: Cross multiply
211,605.12x = 316,992.24 × 122,671.68 - Step 4: Simplify right side
211,605.12x = 38,885,970,627.76 - Step 5: Solve for x
x = 38,885,970,627.76/211,605.12 - Step 6: Final answer
x = 183,766.68
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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.