Finding the Fourth Proportional to 402,479.19, 555,394.35 and 221,187.21
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Solution
The fourth proportional to 402,479.19, 555,394.35 and 221,187.21 is: 305,223.55
Step by Step Solution
- Step 1: Write the proportion equation
402,479.19 : 555,394.35 = 221,187.21 : x - Step 2: Convert to fraction form
402,479.19/555,394.35 = 221,187.21/x - Step 3: Cross multiply
402,479.19x = 555,394.35 × 221,187.21 - Step 4: Simplify right side
402,479.19x = 122,846,126,726.26 - Step 5: Solve for x
x = 122,846,126,726.26/402,479.19 - Step 6: Final answer
x = 305,223.55
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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.