Finding the Fourth Proportional to 448,434.76, 618,815.28 and 257,435.68
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Solution
The fourth proportional to 448,434.76, 618,815.28 and 257,435.68 is: 355,247.07
Step by Step Solution
- Step 1: Write the proportion equation
448,434.76 : 618,815.28 = 257,435.68 : x - Step 2: Convert to fraction form
448,434.76/618,815.28 = 257,435.68/x - Step 3: Cross multiply
448,434.76x = 618,815.28 × 257,435.68 - Step 4: Simplify right side
448,434.76x = 159,305,132,401.19 - Step 5: Solve for x
x = 159,305,132,401.19/448,434.76 - Step 6: Final answer
x = 355,247.07
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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.