Finding the Fourth Proportional to 415,095.70, 622,643.55 and 205,143.70
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Solution
The fourth proportional to 415,095.70, 622,643.55 and 205,143.70 is: 307,715.55
Step by Step Solution
- Step 1: Write the proportion equation
415,095.70 : 622,643.55 = 205,143.70 : x - Step 2: Convert to fraction form
415,095.70/622,643.55 = 205,143.70/x - Step 3: Cross multiply
415,095.70x = 622,643.55 × 205,143.70 - Step 4: Simplify right side
415,095.70x = 127,731,401,628.14 - Step 5: Solve for x
x = 127,731,401,628.14/415,095.70 - Step 6: Final answer
x = 307,715.55
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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.