Finding the Fourth Proportional to 214,596,657.80, 321,894,986.70 and 78,236,721.80
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Solution
The fourth proportional to 214,596,657.80, 321,894,986.70 and 78,236,721.80 is: 117,355,082.70
Step by Step Solution
- Step 1: Write the proportion equation
214,596,657.80 : 321,894,986.70 = 78,236,721.80 : x - Step 2: Convert to fraction form
214,596,657.80/321,894,986.70 = 78,236,721.80/x - Step 3: Cross multiply
214,596,657.80x = 321,894,986.70 × 78,236,721.80 - Step 4: Simplify right side
214,596,657.80x = 25,184,008,523,262,600 - Step 5: Solve for x
x = 25,184,008,523,262,600/214,596,657.80 - Step 6: Final answer
x = 117,355,082.70
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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.