Finding the Fourth Proportional to 265,964,805.20, 398,947,207.80 and 163,928,133.20
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Solution
The fourth proportional to 265,964,805.20, 398,947,207.80 and 163,928,133.20 is: 245,892,199.80
Step by Step Solution
- Step 1: Write the proportion equation
265,964,805.20 : 398,947,207.80 = 163,928,133.20 : x - Step 2: Convert to fraction form
265,964,805.20/398,947,207.80 = 163,928,133.20/x - Step 3: Cross multiply
265,964,805.20x = 398,947,207.80 × 163,928,133.20 - Step 4: Simplify right side
265,964,805.20x = 65,398,671,020,006,480 - Step 5: Solve for x
x = 65,398,671,020,006,480/265,964,805.20 - Step 6: Final answer
x = 245,892,199.80
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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.