Finding the Fourth Proportional to 216,083,007.21, 298,232,231.10 and 128,026,582.05
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Solution
The fourth proportional to 216,083,007.21, 298,232,231.10 and 128,026,582.05 is: 176,699,008.86
Step by Step Solution
- Step 1: Write the proportion equation
216,083,007.21 : 298,232,231.10 = 128,026,582.05 : x - Step 2: Convert to fraction form
216,083,007.21/298,232,231.10 = 128,026,582.05/x - Step 3: Cross multiply
216,083,007.21x = 298,232,231.10 × 128,026,582.05 - Step 4: Simplify right side
216,083,007.21x = 38,181,653,204,878,712 - Step 5: Solve for x
x = 38,181,653,204,878,712/216,083,007.21 - Step 6: Final answer
x = 176,699,008.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.