Finding the Fourth Proportional to 211,239,932.20, 316,859,898.30 and 203,587,181.80
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Solution
The fourth proportional to 211,239,932.20, 316,859,898.30 and 203,587,181.80 is: 305,380,772.70
Step by Step Solution
- Step 1: Write the proportion equation
211,239,932.20 : 316,859,898.30 = 203,587,181.80 : x - Step 2: Convert to fraction form
211,239,932.20/316,859,898.30 = 203,587,181.80/x - Step 3: Cross multiply
211,239,932.20x = 316,859,898.30 × 203,587,181.80 - Step 4: Simplify right side
211,239,932.20x = 64,508,613,720,331,616 - Step 5: Solve for x
x = 64,508,613,720,331,616/211,239,932.20 - Step 6: Final answer
x = 305,380,772.70
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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.