Finding the Fourth Proportional to 228,542.70, 315,417.12 and 137,950.68
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Solution
The fourth proportional to 228,542.70, 315,417.12 and 137,950.68 is: 190,388.96
Step by Step Solution
- Step 1: Write the proportion equation
228,542.70 : 315,417.12 = 137,950.68 : x - Step 2: Convert to fraction form
228,542.70/315,417.12 = 137,950.68/x - Step 3: Cross multiply
228,542.70x = 315,417.12 × 137,950.68 - Step 4: Simplify right side
228,542.70x = 43,512,006,187.64 - Step 5: Solve for x
x = 43,512,006,187.64/228,542.70 - Step 6: Final answer
x = 190,388.96
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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.