Finding the Fourth Proportional to 402,603.11, 555,594.09 and 221,326.70
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Solution
The fourth proportional to 402,603.11, 555,594.09 and 221,326.70 is: 305,431.83
Step by Step Solution
- Step 1: Write the proportion equation
402,603.11 : 555,594.09 = 221,326.70 : x - Step 2: Convert to fraction form
402,603.11/555,594.09 = 221,326.70/x - Step 3: Cross multiply
402,603.11x = 555,594.09 × 221,326.70 - Step 4: Simplify right side
402,603.11x = 122,967,802,871.26 - Step 5: Solve for x
x = 122,967,802,871.26/402,603.11 - Step 6: Final answer
x = 305,431.83
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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.