Finding the Fourth Proportional to 395,218,415,694.21, 545,200,689,404.73 and 258,121,492,160.40
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Solution
The fourth proportional to 395,218,415,694.21, 545,200,689,404.73 and 258,121,492,160.40 is: 356,076,563,964.85
Step by Step Solution
- Step 1: Write the proportion equation
395,218,415,694.21 : 545,200,689,404.73 = 258,121,492,160.40 : x - Step 2: Convert to fraction form
395,218,415,694.21/545,200,689,404.73 = 258,121,492,160.40/x - Step 3: Cross multiply
395,218,415,694.21x = 545,200,689,404.73 × 258,121,492,160.40 - Step 4: Simplify right side
395,218,415,694.21x = 140,728,015,476,027,675,377,664 - Step 5: Solve for x
x = 140,728,015,476,027,675,377,664/395,218,415,694.21 - Step 6: Final answer
x = 356,076,563,964.85
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.