Finding the Fourth Proportional to 371,881.44, 513,200.40 and 202,115.60
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Solution
The fourth proportional to 371,881.44, 513,200.40 and 202,115.60 is: 278,921.71
Step by Step Solution
- Step 1: Write the proportion equation
371,881.44 : 513,200.40 = 202,115.60 : x - Step 2: Convert to fraction form
371,881.44/513,200.40 = 202,115.60/x - Step 3: Cross multiply
371,881.44x = 513,200.40 × 202,115.60 - Step 4: Simplify right side
371,881.44x = 103,725,806,766.24 - Step 5: Solve for x
x = 103,725,806,766.24/371,881.44 - Step 6: Final answer
x = 278,921.71
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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.