Finding the Fourth Proportional to 354,929.23, 489,813.11 and 201,989.40
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Solution
The fourth proportional to 354,929.23, 489,813.11 and 201,989.40 is: 278,751.50
Step by Step Solution
- Step 1: Write the proportion equation
354,929.23 : 489,813.11 = 201,989.40 : x - Step 2: Convert to fraction form
354,929.23/489,813.11 = 201,989.40/x - Step 3: Cross multiply
354,929.23x = 489,813.11 × 201,989.40 - Step 4: Simplify right side
354,929.23x = 98,937,056,201.03 - Step 5: Solve for x
x = 98,937,056,201.03/354,929.23 - Step 6: Final answer
x = 278,751.50
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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.