Finding the Fourth Proportional to 298,215,721.36, 447,115,738.40 and 132,128,949.68
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Solution
The fourth proportional to 298,215,721.36, 447,115,738.40 and 132,128,949.68 is: 198,101,336.28
Step by Step Solution
- Step 1: Write the proportion equation
298,215,721.36 : 447,115,738.40 = 132,128,949.68 : x - Step 2: Convert to fraction form
298,215,721.36/447,115,738.40 = 132,128,949.68/x - Step 3: Cross multiply
298,215,721.36x = 447,115,738.40 × 132,128,949.68 - Step 4: Simplify right side
298,215,721.36x = 59,076,932,900,189,640 - Step 5: Solve for x
x = 59,076,932,900,189,640/298,215,721.36 - Step 6: Final answer
x = 198,101,336.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.