Finding the Fourth Proportional to 385,554,260.80, 532,074,123.84 and 209,349,682.84
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Solution
The fourth proportional to 385,554,260.80, 532,074,123.84 and 209,349,682.84 is: 288,907,581.63
Step by Step Solution
- Step 1: Write the proportion equation
385,554,260.80 : 532,074,123.84 = 209,349,682.84 : x - Step 2: Convert to fraction form
385,554,260.80/532,074,123.84 = 209,349,682.84/x - Step 3: Cross multiply
385,554,260.80x = 532,074,123.84 × 209,349,682.84 - Step 4: Simplify right side
385,554,260.80x = 111,389,549,073,274,880 - Step 5: Solve for x
x = 111,389,549,073,274,880/385,554,260.80 - Step 6: Final answer
x = 288,907,581.63
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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.