Finding the Fourth Proportional to 217,752,078.30, 326,628,117.45 and 197,596,686.30
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Solution
The fourth proportional to 217,752,078.30, 326,628,117.45 and 197,596,686.30 is: 296,395,029.45
Step by Step Solution
- Step 1: Write the proportion equation
217,752,078.30 : 326,628,117.45 = 197,596,686.30 : x - Step 2: Convert to fraction form
217,752,078.30/326,628,117.45 = 197,596,686.30/x - Step 3: Cross multiply
217,752,078.30x = 326,628,117.45 × 197,596,686.30 - Step 4: Simplify right side
217,752,078.30x = 64,540,633,660,527,208 - Step 5: Solve for x
x = 64,540,633,660,527,208/217,752,078.30 - Step 6: Final answer
x = 296,395,029.45
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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.