Finding the Fourth Proportional to 354,421.10, 489,101.90 and 201,460.23
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Solution
The fourth proportional to 354,421.10, 489,101.90 and 201,460.23 is: 278,015.56
Step by Step Solution
- Step 1: Write the proportion equation
354,421.10 : 489,101.90 = 201,460.23 : x - Step 2: Convert to fraction form
354,421.10/489,101.90 = 201,460.23/x - Step 3: Cross multiply
354,421.10x = 489,101.90 × 201,460.23 - Step 4: Simplify right side
354,421.10x = 98,534,580,260.14 - Step 5: Solve for x
x = 98,534,580,260.14/354,421.10 - Step 6: Final answer
x = 278,015.56
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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.