Finding the Fourth Proportional to 395,582,372.88, 545,719,478.76 and 256,398,193.68
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Solution
The fourth proportional to 395,582,372.88, 545,719,478.76 and 256,398,193.68 is: 353,710,120.07
Step by Step Solution
- Step 1: Write the proportion equation
395,582,372.88 : 545,719,478.76 = 256,398,193.68 : x - Step 2: Convert to fraction form
395,582,372.88/545,719,478.76 = 256,398,193.68/x - Step 3: Cross multiply
395,582,372.88x = 545,719,478.76 × 256,398,193.68 - Step 4: Simplify right side
395,582,372.88x = 139,921,488,610,055,120 - Step 5: Solve for x
x = 139,921,488,610,055,120/395,582,372.88 - Step 6: Final answer
x = 353,710,120.07
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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.