Finding the Fourth Proportional to 256,862.36, 385,371.12 and 76,953.62
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Solution
The fourth proportional to 256,862.36, 385,371.12 and 76,953.62 is: 115,453.67
Step by Step Solution
- Step 1: Write the proportion equation
256,862.36 : 385,371.12 = 76,953.62 : x - Step 2: Convert to fraction form
256,862.36/385,371.12 = 76,953.62/x - Step 3: Cross multiply
256,862.36x = 385,371.12 × 76,953.62 - Step 4: Simplify right side
256,862.36x = 29,655,702,727.45 - Step 5: Solve for x
x = 29,655,702,727.45/256,862.36 - Step 6: Final answer
x = 115,453.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.