Finding the Fourth Proportional to 253,218,044.58, 379,819,980.99 and 80,705,210.10
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Solution
The fourth proportional to 253,218,044.58, 379,819,980.99 and 80,705,210.10 is: 121,055,556.75
Step by Step Solution
- Step 1: Write the proportion equation
253,218,044.58 : 379,819,980.99 = 80,705,210.10 : x - Step 2: Convert to fraction form
253,218,044.58/379,819,980.99 = 80,705,210.10/x - Step 3: Cross multiply
253,218,044.58x = 379,819,980.99 × 80,705,210.10 - Step 4: Simplify right side
253,218,044.58x = 30,653,451,365,975,956 - Step 5: Solve for x
x = 30,653,451,365,975,956/253,218,044.58 - Step 6: Final answer
x = 121,055,556.75
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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.