Finding the Fourth Proportional to 275,423.70, 413,135.55 and 213,215.70
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Solution
The fourth proportional to 275,423.70, 413,135.55 and 213,215.70 is: 319,823.55
Step by Step Solution
- Step 1: Write the proportion equation
275,423.70 : 413,135.55 = 213,215.70 : x - Step 2: Convert to fraction form
275,423.70/413,135.55 = 213,215.70/x - Step 3: Cross multiply
275,423.70x = 413,135.55 × 213,215.70 - Step 4: Simplify right side
275,423.70x = 88,086,985,488.14 - Step 5: Solve for x
x = 88,086,985,488.14/275,423.70 - Step 6: Final answer
x = 319,823.55
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Similar ratio
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1.5x scale
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.