Finding the Fourth Proportional to 226,702,445.12, 312,891,476.64 and 128,911,469.12
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Solution
The fourth proportional to 226,702,445.12, 312,891,476.64 and 128,911,469.12 is: 177,921,768.37
Step by Step Solution
- Step 1: Write the proportion equation
226,702,445.12 : 312,891,476.64 = 128,911,469.12 : x - Step 2: Convert to fraction form
226,702,445.12/312,891,476.64 = 128,911,469.12/x - Step 3: Cross multiply
226,702,445.12x = 312,891,476.64 × 128,911,469.12 - Step 4: Simplify right side
226,702,445.12x = 40,335,299,928,788,560 - Step 5: Solve for x
x = 40,335,299,928,788,560/226,702,445.12 - Step 6: Final answer
x = 177,921,768.37
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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.