Finding the Fourth Proportional to 371,805.09, 513,090.07 and 202,039.21
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Solution
The fourth proportional to 371,805.09, 513,090.07 and 202,039.21 is: 278,813.59
Step by Step Solution
- Step 1: Write the proportion equation
371,805.09 : 513,090.07 = 202,039.21 : x - Step 2: Convert to fraction form
371,805.09/513,090.07 = 202,039.21/x - Step 3: Cross multiply
371,805.09x = 513,090.07 × 202,039.21 - Step 4: Simplify right side
371,805.09x = 103,664,312,401.65 - Step 5: Solve for x
x = 103,664,312,401.65/371,805.09 - Step 6: Final answer
x = 278,813.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.