Finding the Fourth Proportional to 387,415.18, 534,604.08 and 217,616.50
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Solution
The fourth proportional to 387,415.18, 534,604.08 and 217,616.50 is: 300,294.55
Step by Step Solution
- Step 1: Write the proportion equation
387,415.18 : 534,604.08 = 217,616.50 : x - Step 2: Convert to fraction form
387,415.18/534,604.08 = 217,616.50/x - Step 3: Cross multiply
387,415.18x = 534,604.08 × 217,616.50 - Step 4: Simplify right side
387,415.18x = 116,338,668,775.32 - Step 5: Solve for x
x = 116,338,668,775.32/387,415.18 - Step 6: Final answer
x = 300,294.55
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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.