Finding the Fourth Proportional to 447,915.93, 618,138.15 and 243,972.99
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Solution
The fourth proportional to 447,915.93, 618,138.15 and 243,972.99 is: 336,690.44
Step by Step Solution
- Step 1: Write the proportion equation
447,915.93 : 618,138.15 = 243,972.99 : x - Step 2: Convert to fraction form
447,915.93/618,138.15 = 243,972.99/x - Step 3: Cross multiply
447,915.93x = 618,138.15 × 243,972.99 - Step 4: Simplify right side
447,915.93x = 150,809,012,688.57 - Step 5: Solve for x
x = 150,809,012,688.57/447,915.93 - Step 6: Final answer
x = 336,690.44
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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.