Finding the Fourth Proportional to 229,288.75, 316,418.48 and 128,686.75
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Solution
The fourth proportional to 229,288.75, 316,418.48 and 128,686.75 is: 177,587.72
Step by Step Solution
- Step 1: Write the proportion equation
229,288.75 : 316,418.48 = 128,686.75 : x - Step 2: Convert to fraction form
229,288.75/316,418.48 = 128,686.75/x - Step 3: Cross multiply
229,288.75x = 316,418.48 × 128,686.75 - Step 4: Simplify right side
229,288.75x = 40,718,865,831.14 - Step 5: Solve for x
x = 40,718,865,831.14/229,288.75 - Step 6: Final answer
x = 177,587.72
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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.