Finding the Fourth Proportional to 247,190,987.20, 370,786,480.80 and 74,649,809.20
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Solution
The fourth proportional to 247,190,987.20, 370,786,480.80 and 74,649,809.20 is: 111,974,713.80
Step by Step Solution
- Step 1: Write the proportion equation
247,190,987.20 : 370,786,480.80 = 74,649,809.20 : x - Step 2: Convert to fraction form
247,190,987.20/370,786,480.80 = 74,649,809.20/x - Step 3: Cross multiply
247,190,987.20x = 370,786,480.80 × 74,649,809.20 - Step 4: Simplify right side
247,190,987.20x = 27,679,140,045,659,464 - Step 5: Solve for x
x = 27,679,140,045,659,464/247,190,987.20 - Step 6: Final answer
x = 111,974,713.80
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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.