Finding the Fourth Proportional to 290,240,423.68, 400,531,789.56 and 159,860,231.68
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Solution
The fourth proportional to 290,240,423.68, 400,531,789.56 and 159,860,231.68 is: 220,607,122.41
Step by Step Solution
- Step 1: Write the proportion equation
290,240,423.68 : 400,531,789.56 = 159,860,231.68 : x - Step 2: Convert to fraction form
290,240,423.68/400,531,789.56 = 159,860,231.68/x - Step 3: Cross multiply
290,240,423.68x = 400,531,789.56 × 159,860,231.68 - Step 4: Simplify right side
290,240,423.68x = 64,029,104,674,266,608 - Step 5: Solve for x
x = 64,029,104,674,266,608/290,240,423.68 - Step 6: Final answer
x = 220,607,122.41
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.