Finding the Fourth Proportional to 448,320.99, 618,719.99 and 257,371.23
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Solution
The fourth proportional to 448,320.99, 618,719.99 and 257,371.23 is: 355,193.55
Step by Step Solution
- Step 1: Write the proportion equation
448,320.99 : 618,719.99 = 257,371.23 : x - Step 2: Convert to fraction form
448,320.99/618,719.99 = 257,371.23/x - Step 3: Cross multiply
448,320.99x = 618,719.99 × 257,371.23 - Step 4: Simplify right side
448,320.99x = 159,240,723,565.03 - Step 5: Solve for x
x = 159,240,723,565.03/448,320.99 - Step 6: Final answer
x = 355,193.55
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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.