Finding the Fourth Proportional to 278,518,514.20, 417,777,771.30 and 149,378,351.20
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Solution
The fourth proportional to 278,518,514.20, 417,777,771.30 and 149,378,351.20 is: 224,067,526.80
Step by Step Solution
- Step 1: Write the proportion equation
278,518,514.20 : 417,777,771.30 = 149,378,351.20 : x - Step 2: Convert to fraction form
278,518,514.20/417,777,771.30 = 149,378,351.20/x - Step 3: Cross multiply
278,518,514.20x = 417,777,771.30 × 149,378,351.20 - Step 4: Simplify right side
278,518,514.20x = 62,406,954,644,804,680 - Step 5: Solve for x
x = 62,406,954,644,804,680/278,518,514.20 - Step 6: Final answer
x = 224,067,526.80
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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.