Finding the Fourth Proportional to 214,331,817.60, 321,497,726.40 and 212,820,163.20
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Solution
The fourth proportional to 214,331,817.60, 321,497,726.40 and 212,820,163.20 is: 319,230,244.80
Step by Step Solution
- Step 1: Write the proportion equation
214,331,817.60 : 321,497,726.40 = 212,820,163.20 : x - Step 2: Convert to fraction form
214,331,817.60/321,497,726.40 = 212,820,163.20/x - Step 3: Cross multiply
214,331,817.60x = 321,497,726.40 × 212,820,163.20 - Step 4: Simplify right side
214,331,817.60x = 68,421,198,600,876,936 - Step 5: Solve for x
x = 68,421,198,600,876,936/214,331,817.60 - Step 6: Final answer
x = 319,230,244.80
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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.