Finding the Fourth Proportional to 215,686,937.70, 323,530,406.55 and 164,668,601.70
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Solution
The fourth proportional to 215,686,937.70, 323,530,406.55 and 164,668,601.70 is: 247,002,902.55
Step by Step Solution
- Step 1: Write the proportion equation
215,686,937.70 : 323,530,406.55 = 164,668,601.70 : x - Step 2: Convert to fraction form
215,686,937.70/323,530,406.55 = 164,668,601.70/x - Step 3: Cross multiply
215,686,937.70x = 323,530,406.55 × 164,668,601.70 - Step 4: Simplify right side
215,686,937.70x = 53,275,299,654,021,016 - Step 5: Solve for x
x = 53,275,299,654,021,016/215,686,937.70 - Step 6: Final answer
x = 247,002,902.55
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1.5x scale
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.