Finding the Fourth Proportional to 216,774.12, 299,153.60 and 121,287.00
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Solution
The fourth proportional to 216,774.12, 299,153.60 and 121,287.00 is: 167,379.04
Step by Step Solution
- Step 1: Write the proportion equation
216,774.12 : 299,153.60 = 121,287.00 : x - Step 2: Convert to fraction form
216,774.12/299,153.60 = 121,287.00/x - Step 3: Cross multiply
216,774.12x = 299,153.60 × 121,287.00 - Step 4: Simplify right side
216,774.12x = 36,283,444,335.66 - Step 5: Solve for x
x = 36,283,444,335.66/216,774.12 - Step 6: Final answer
x = 167,379.04
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.