Finding the Fourth Proportional to 216,968,758.47, 299,419,313.09 and 127,680,442.62
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Solution
The fourth proportional to 216,968,758.47, 299,419,313.09 and 127,680,442.62 is: 176,200,438.69
Step by Step Solution
- Step 1: Write the proportion equation
216,968,758.47 : 299,419,313.09 = 127,680,442.62 : x - Step 2: Convert to fraction form
216,968,758.47/299,419,313.09 = 127,680,442.62/x - Step 3: Cross multiply
216,968,758.47x = 299,419,313.09 × 127,680,442.62 - Step 4: Simplify right side
216,968,758.47x = 38,229,990,423,669,160 - Step 5: Solve for x
x = 38,229,990,423,669,160/216,968,758.47 - Step 6: Final answer
x = 176,200,438.69
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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.