Finding the Fourth Proportional to 407,992,160.32, 612,168,536.76 and 213,857,156.68
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Solution
The fourth proportional to 407,992,160.32, 612,168,536.76 and 213,857,156.68 is: 320,880,240.88
Step by Step Solution
- Step 1: Write the proportion equation
407,992,160.32 : 612,168,536.76 = 213,857,156.68 : x - Step 2: Convert to fraction form
407,992,160.32/612,168,536.76 = 213,857,156.68/x - Step 3: Cross multiply
407,992,160.32x = 612,168,536.76 × 213,857,156.68 - Step 4: Simplify right side
407,992,160.32x = 130,916,622,680,449,664 - Step 5: Solve for x
x = 130,916,622,680,449,664/407,992,160.32 - Step 6: Final answer
x = 320,880,240.88
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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.