Finding the Fourth Proportional to 231,632.10, 319,657.70 and 129,655.02
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Solution
The fourth proportional to 231,632.10, 319,657.70 and 129,655.02 is: 178,926.95
Step by Step Solution
- Step 1: Write the proportion equation
231,632.10 : 319,657.70 = 129,655.02 : x - Step 2: Convert to fraction form
231,632.10/319,657.70 = 129,655.02/x - Step 3: Cross multiply
231,632.10x = 319,657.70 × 129,655.02 - Step 4: Simplify right side
231,632.10x = 41,445,225,486.65 - Step 5: Solve for x
x = 41,445,225,486.65/231,632.10 - Step 6: Final answer
x = 178,926.95
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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.