Finding the Fourth Proportional to 409,250.49, 612,743.95 and 209,139.99
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Solution
The fourth proportional to 409,250.49, 612,743.95 and 209,139.99 is: 313,131.61
Step by Step Solution
- Step 1: Write the proportion equation
409,250.49 : 612,743.95 = 209,139.99 : x - Step 2: Convert to fraction form
409,250.49/612,743.95 = 209,139.99/x - Step 3: Cross multiply
409,250.49x = 612,743.95 × 209,139.99 - Step 4: Simplify right side
409,250.49x = 128,149,263,575.56 - Step 5: Solve for x
x = 128,149,263,575.56/409,250.49 - Step 6: Final answer
x = 313,131.61
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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.