Finding the Fourth Proportional to 229,490.24, 316,697.76 and 128,889.28
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Solution
The fourth proportional to 229,490.24, 316,697.76 and 128,889.28 is: 177,867.90
Step by Step Solution
- Step 1: Write the proportion equation
229,490.24 : 316,697.76 = 128,889.28 : x - Step 2: Convert to fraction form
229,490.24/316,697.76 = 128,889.28/x - Step 3: Cross multiply
229,490.24x = 316,697.76 × 128,889.28 - Step 4: Simplify right side
229,490.24x = 40,818,946,264.01 - Step 5: Solve for x
x = 40,818,946,264.01/229,490.24 - Step 6: Final answer
x = 177,867.90
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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.