Finding the Fourth Proportional to 259,302.25, 389,018.99 and 72,313.75
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Solution
The fourth proportional to 259,302.25, 389,018.99 and 72,313.75 is: 108,488.92
Step by Step Solution
- Step 1: Write the proportion equation
259,302.25 : 389,018.99 = 72,313.75 : x - Step 2: Convert to fraction form
259,302.25/389,018.99 = 72,313.75/x - Step 3: Cross multiply
259,302.25x = 389,018.99 × 72,313.75 - Step 4: Simplify right side
259,302.25x = 28,131,421,988.11 - Step 5: Solve for x
x = 28,131,421,988.11/259,302.25 - Step 6: Final answer
x = 108,488.92
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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.