Finding the Fourth Proportional to 229,266.75, 316,417.28 and 128,664.75
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Solution
The fourth proportional to 229,266.75, 316,417.28 and 128,664.75 is: 177,573.72
Step by Step Solution
- Step 1: Write the proportion equation
229,266.75 : 316,417.28 = 128,664.75 : x - Step 2: Convert to fraction form
229,266.75/316,417.28 = 128,664.75/x - Step 3: Cross multiply
229,266.75x = 316,417.28 × 128,664.75 - Step 4: Simplify right side
229,266.75x = 40,711,750,226.88 - Step 5: Solve for x
x = 40,711,750,226.88/229,266.75 - Step 6: Final answer
x = 177,573.72
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1.5x scale
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.