Finding the Fourth Proportional to 216,206,379.71, 324,826,948.25 and 138,635,263.08
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Solution
The fourth proportional to 216,206,379.71, 324,826,948.25 and 138,635,263.08 is: 208,284,646.76
Step by Step Solution
- Step 1: Write the proportion equation
216,206,379.71 : 324,826,948.25 = 138,635,263.08 : x - Step 2: Convert to fraction form
216,206,379.71/324,826,948.25 = 138,635,263.08/x - Step 3: Cross multiply
216,206,379.71x = 324,826,948.25 × 138,635,263.08 - Step 4: Simplify right side
216,206,379.71x = 45,032,469,426,112,296 - Step 5: Solve for x
x = 45,032,469,426,112,296/216,206,379.71 - Step 6: Final answer
x = 208,284,646.76
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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.