Finding the Fourth Proportional to 448,069.78, 618,331.08 and 257,113.09
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Solution
The fourth proportional to 448,069.78, 618,331.08 and 257,113.09 is: 354,813.07
Step by Step Solution
- Step 1: Write the proportion equation
448,069.78 : 618,331.08 = 257,113.09 : x - Step 2: Convert to fraction form
448,069.78/618,331.08 = 257,113.09/x - Step 3: Cross multiply
448,069.78x = 618,331.08 × 257,113.09 - Step 4: Simplify right side
448,069.78x = 158,981,014,621.84 - Step 5: Solve for x
x = 158,981,014,621.84/448,069.78 - Step 6: Final answer
x = 354,813.07
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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.