Finding the Fourth Proportional to 215,678,234.40, 323,517,351.60 and 143,118,823.20
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Solution
The fourth proportional to 215,678,234.40, 323,517,351.60 and 143,118,823.20 is: 214,678,234.80
Step by Step Solution
- Step 1: Write the proportion equation
215,678,234.40 : 323,517,351.60 = 143,118,823.20 : x - Step 2: Convert to fraction form
215,678,234.40/323,517,351.60 = 143,118,823.20/x - Step 3: Cross multiply
215,678,234.40x = 323,517,351.60 × 143,118,823.20 - Step 4: Simplify right side
215,678,234.40x = 46,301,422,645,772,640 - Step 5: Solve for x
x = 46,301,422,645,772,640/215,678,234.40 - Step 6: Final answer
x = 214,678,234.80
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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.