Finding the Fourth Proportional to 354,262,821.80, 531,394,232.70 and 210,935,589.80
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Solution
The fourth proportional to 354,262,821.80, 531,394,232.70 and 210,935,589.80 is: 316,403,384.70
Step by Step Solution
- Step 1: Write the proportion equation
354,262,821.80 : 531,394,232.70 = 210,935,589.80 : x - Step 2: Convert to fraction form
354,262,821.80/531,394,232.70 = 210,935,589.80/x - Step 3: Cross multiply
354,262,821.80x = 531,394,232.70 × 210,935,589.80 - Step 4: Simplify right side
354,262,821.80x = 112,089,955,890,892,944 - Step 5: Solve for x
x = 112,089,955,890,892,944/354,262,821.80 - Step 6: Final answer
x = 316,403,384.70
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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.