Finding the Fourth Proportional to 402,408.34, 555,323.36 and 221,131.96
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Solution
The fourth proportional to 402,408.34, 555,323.36 and 221,131.96 is: 305,162.02
Step by Step Solution
- Step 1: Write the proportion equation
402,408.34 : 555,323.36 = 221,131.96 : x - Step 2: Convert to fraction form
402,408.34/555,323.36 = 221,131.96/x - Step 3: Cross multiply
402,408.34x = 555,323.36 × 221,131.96 - Step 4: Simplify right side
402,408.34x = 122,799,743,030.59 - Step 5: Solve for x
x = 122,799,743,030.59/402,408.34 - Step 6: Final answer
x = 305,162.02
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1.5x scale
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.