Finding the Fourth Proportional to 402,493.48, 555,438.18 and 221,207.08
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Solution
The fourth proportional to 402,493.48, 555,438.18 and 221,207.08 is: 305,264.22
Step by Step Solution
- Step 1: Write the proportion equation
402,493.48 : 555,438.18 = 221,207.08 : x - Step 2: Convert to fraction form
402,493.48/555,438.18 = 221,207.08/x - Step 3: Cross multiply
402,493.48x = 555,438.18 × 221,207.08 - Step 4: Simplify right side
402,493.48x = 122,866,857,918.31 - Step 5: Solve for x
x = 122,866,857,918.31/402,493.48 - Step 6: Final answer
x = 305,264.22
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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.