Finding the Fourth Proportional to 199,391.68, 299,085.36 and 115,278.40
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Solution
The fourth proportional to 199,391.68, 299,085.36 and 115,278.40 is: 172,916.35
Step by Step Solution
- Step 1: Write the proportion equation
199,391.68 : 299,085.36 = 115,278.40 : x - Step 2: Convert to fraction form
199,391.68/299,085.36 = 115,278.40/x - Step 3: Cross multiply
199,391.68x = 299,085.36 × 115,278.40 - Step 4: Simplify right side
199,391.68x = 34,478,081,764.22 - Step 5: Solve for x
x = 34,478,081,764.22/199,391.68 - Step 6: Final answer
x = 172,916.35
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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.