Finding the Fourth Proportional to 427,580,422.20, 641,110,817.70 and 168,497,029.80
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Solution
The fourth proportional to 427,580,422.20, 641,110,817.70 and 168,497,029.80 is: 252,643,158.92
Step by Step Solution
- Step 1: Write the proportion equation
427,580,422.20 : 641,110,817.70 = 168,497,029.80 : x - Step 2: Convert to fraction form
427,580,422.20/641,110,817.70 = 168,497,029.80/x - Step 3: Cross multiply
427,580,422.20x = 641,110,817.70 × 168,497,029.80 - Step 4: Simplify right side
427,580,422.20x = 108,025,268,555,099,280 - Step 5: Solve for x
x = 108,025,268,555,099,280/427,580,422.20 - Step 6: Final answer
x = 252,643,158.92
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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.