Finding the Fourth Proportional to 213,081,569.10, 319,622,353.65 and 98,290,313.10
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Solution
The fourth proportional to 213,081,569.10, 319,622,353.65 and 98,290,313.10 is: 147,435,469.65
Step by Step Solution
- Step 1: Write the proportion equation
213,081,569.10 : 319,622,353.65 = 98,290,313.10 : x - Step 2: Convert to fraction form
213,081,569.10/319,622,353.65 = 98,290,313.10/x - Step 3: Cross multiply
213,081,569.10x = 319,622,353.65 × 98,290,313.10 - Step 4: Simplify right side
213,081,569.10x = 31,415,781,214,017,424 - Step 5: Solve for x
x = 31,415,781,214,017,424/213,081,569.10 - Step 6: Final answer
x = 147,435,469.65
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Similar ratio
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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.