Finding the Fourth Proportional to 287,782,756.80, 431,674,135.20 and 237,394,276.80
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Solution
The fourth proportional to 287,782,756.80, 431,674,135.20 and 237,394,276.80 is: 356,091,415.20
Step by Step Solution
- Step 1: Write the proportion equation
287,782,756.80 : 431,674,135.20 = 237,394,276.80 : x - Step 2: Convert to fraction form
287,782,756.80/431,674,135.20 = 237,394,276.80/x - Step 3: Cross multiply
287,782,756.80x = 431,674,135.20 × 237,394,276.80 - Step 4: Simplify right side
287,782,756.80x = 102,476,969,139,069,424 - Step 5: Solve for x
x = 102,476,969,139,069,424/287,782,756.80 - Step 6: Final answer
x = 356,091,415.20
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1.5x scale
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.