Finding the Fourth Proportional to 402,504.41, 555,466.28 and 221,220.95
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Solution
The fourth proportional to 402,504.41, 555,466.28 and 221,220.95 is: 305,290.50
Step by Step Solution
- Step 1: Write the proportion equation
402,504.41 : 555,466.28 = 221,220.95 : x - Step 2: Convert to fraction form
402,504.41/555,466.28 = 221,220.95/x - Step 3: Cross multiply
402,504.41x = 555,466.28 × 221,220.95 - Step 4: Simplify right side
402,504.41x = 122,880,774,271.13 - Step 5: Solve for x
x = 122,880,774,271.13/402,504.41 - Step 6: Final answer
x = 305,290.50
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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.