Finding the Fourth Proportional to 229,478.88, 316,646.40 and 128,857.44
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Solution
The fourth proportional to 229,478.88, 316,646.40 and 128,857.44 is: 177,803.92
Step by Step Solution
- Step 1: Write the proportion equation
229,478.88 : 316,646.40 = 128,857.44 : x - Step 2: Convert to fraction form
229,478.88/316,646.40 = 128,857.44/x - Step 3: Cross multiply
229,478.88x = 316,646.40 × 128,857.44 - Step 4: Simplify right side
229,478.88x = 40,802,244,489.22 - Step 5: Solve for x
x = 40,802,244,489.22/229,478.88 - Step 6: Final answer
x = 177,803.92
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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.