Finding the Fourth Proportional to 448,323.99, 618,724.13 and 257,374.23
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Solution
The fourth proportional to 448,323.99, 618,724.13 and 257,374.23 is: 355,197.69
Step by Step Solution
- Step 1: Write the proportion equation
448,323.99 : 618,724.13 = 257,374.23 : x - Step 2: Convert to fraction form
448,323.99/618,724.13 = 257,374.23/x - Step 3: Cross multiply
448,323.99x = 618,724.13 × 257,374.23 - Step 4: Simplify right side
448,323.99x = 159,243,646,541.17 - Step 5: Solve for x
x = 159,243,646,541.17/448,323.99 - Step 6: Final answer
x = 355,197.69
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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.