Finding the Fourth Proportional to 403,107.30, 556,286.95 and 221,830.96
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Solution
The fourth proportional to 403,107.30, 556,286.95 and 221,830.96 is: 306,126.11
Step by Step Solution
- Step 1: Write the proportion equation
403,107.30 : 556,286.95 = 221,830.96 : x - Step 2: Convert to fraction form
403,107.30/556,286.95 = 221,830.96/x - Step 3: Cross multiply
403,107.30x = 556,286.95 × 221,830.96 - Step 4: Simplify right side
403,107.30x = 123,401,668,153.97 - Step 5: Solve for x
x = 123,401,668,153.97/403,107.30 - Step 6: Final answer
x = 306,126.11
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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.