Finding the Fourth Proportional to 371,985.20, 513,342.88 and 202,219.60
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Solution
The fourth proportional to 371,985.20, 513,342.88 and 202,219.60 is: 279,064.84
Step by Step Solution
- Step 1: Write the proportion equation
371,985.20 : 513,342.88 = 202,219.60 : x - Step 2: Convert to fraction form
371,985.20/513,342.88 = 202,219.60/x - Step 3: Cross multiply
371,985.20x = 513,342.88 × 202,219.60 - Step 4: Simplify right side
371,985.20x = 103,807,991,856.45 - Step 5: Solve for x
x = 103,807,991,856.45/371,985.20 - Step 6: Final answer
x = 279,064.84
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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.