Finding the Fourth Proportional to 321,761,326.40, 482,641,989.60 and 79,424,230.40
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Solution
The fourth proportional to 321,761,326.40, 482,641,989.60 and 79,424,230.40 is: 119,136,345.60
Step by Step Solution
- Step 1: Write the proportion equation
321,761,326.40 : 482,641,989.60 = 79,424,230.40 : x - Step 2: Convert to fraction form
321,761,326.40/482,641,989.60 = 79,424,230.40/x - Step 3: Cross multiply
321,761,326.40x = 482,641,989.60 × 79,424,230.40 - Step 4: Simplify right side
321,761,326.40x = 38,333,468,582,704,808 - Step 5: Solve for x
x = 38,333,468,582,704,808/321,761,326.40 - Step 6: Final answer
x = 119,136,345.60
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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.