Finding the Fourth Proportional to 261,203,081.84, 360,449,428.75 and 142,126,165.70
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Solution
The fourth proportional to 261,203,081.84, 360,449,428.75 and 142,126,165.70 is: 196,128,218.99
Step by Step Solution
- Step 1: Write the proportion equation
261,203,081.84 : 360,449,428.75 = 142,126,165.70 : x - Step 2: Convert to fraction form
261,203,081.84/360,449,428.75 = 142,126,165.70/x - Step 3: Cross multiply
261,203,081.84x = 360,449,428.75 × 142,126,165.70 - Step 4: Simplify right side
261,203,081.84x = 51,229,295,234,835,280 - Step 5: Solve for x
x = 51,229,295,234,835,280/261,203,081.84 - Step 6: Final answer
x = 196,128,218.99
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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.