Finding the Fourth Proportional to 448,095.36, 618,385.60 and 257,143.68
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Solution
The fourth proportional to 448,095.36, 618,385.60 and 257,143.68 is: 354,866.31
Step by Step Solution
- Step 1: Write the proportion equation
448,095.36 : 618,385.60 = 257,143.68 : x - Step 2: Convert to fraction form
448,095.36/618,385.60 = 257,143.68/x - Step 3: Cross multiply
448,095.36x = 618,385.60 × 257,143.68 - Step 4: Simplify right side
448,095.36x = 159,013,948,843.01 - Step 5: Solve for x
x = 159,013,948,843.01/448,095.36 - Step 6: Final answer
x = 354,866.31
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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.