Finding the Fourth Proportional to 215,686,964.70, 323,530,447.05 and 164,668,628.70
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Solution
The fourth proportional to 215,686,964.70, 323,530,447.05 and 164,668,628.70 is: 247,002,943.05
Step by Step Solution
- Step 1: Write the proportion equation
215,686,964.70 : 323,530,447.05 = 164,668,628.70 : x - Step 2: Convert to fraction form
215,686,964.70/323,530,447.05 = 164,668,628.70/x - Step 3: Cross multiply
215,686,964.70x = 323,530,447.05 × 164,668,628.70 - Step 4: Simplify right side
215,686,964.70x = 53,275,315,058,421,456 - Step 5: Solve for x
x = 53,275,315,058,421,456/215,686,964.70 - Step 6: Final answer
x = 247,002,943.05
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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.