Finding the Fourth Proportional to 265,965,302.70, 398,947,954.05 and 163,928,630.70
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Solution
The fourth proportional to 265,965,302.70, 398,947,954.05 and 163,928,630.70 is: 245,892,946.05
Step by Step Solution
- Step 1: Write the proportion equation
265,965,302.70 : 398,947,954.05 = 163,928,630.70 : x - Step 2: Convert to fraction form
265,965,302.70/398,947,954.05 = 163,928,630.70/x - Step 3: Cross multiply
265,965,302.70x = 398,947,954.05 × 163,928,630.70 - Step 4: Simplify right side
265,965,302.70x = 65,398,991,827,983,016 - Step 5: Solve for x
x = 65,398,991,827,983,016/265,965,302.70 - Step 6: Final answer
x = 245,892,946.05
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Double scale
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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.