Finding the Fourth Proportional to 402,658.18, 555,654.14 and 221,368.80
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Solution
The fourth proportional to 402,658.18, 555,654.14 and 221,368.80 is: 305,481.17
Step by Step Solution
- Step 1: Write the proportion equation
402,658.18 : 555,654.14 = 221,368.80 : x - Step 2: Convert to fraction form
402,658.18/555,654.14 = 221,368.80/x - Step 3: Cross multiply
402,658.18x = 555,654.14 × 221,368.80 - Step 4: Simplify right side
402,658.18x = 123,004,490,186.83 - Step 5: Solve for x
x = 123,004,490,186.83/402,658.18 - Step 6: Final answer
x = 305,481.17
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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.