Finding the Fourth Proportional to 355,110.24, 489,987.12 and 202,139.52
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Solution
The fourth proportional to 355,110.24, 489,987.12 and 202,139.52 is: 278,915.53
Step by Step Solution
- Step 1: Write the proportion equation
355,110.24 : 489,987.12 = 202,139.52 : x - Step 2: Convert to fraction form
355,110.24/489,987.12 = 202,139.52/x - Step 3: Cross multiply
355,110.24x = 489,987.12 × 202,139.52 - Step 4: Simplify right side
355,110.24x = 99,045,761,242.98 - Step 5: Solve for x
x = 99,045,761,242.98/355,110.24 - Step 6: Final answer
x = 278,915.53
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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.