Finding the Fourth Proportional to 257,243.40, 385,703.10 and 107,587.80
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Solution
The fourth proportional to 257,243.40, 385,703.10 and 107,587.80 is: 161,313.95
Step by Step Solution
- Step 1: Write the proportion equation
257,243.40 : 385,703.10 = 107,587.80 : x - Step 2: Convert to fraction form
257,243.40/385,703.10 = 107,587.80/x - Step 3: Cross multiply
257,243.40x = 385,703.10 × 107,587.80 - Step 4: Simplify right side
257,243.40x = 41,496,947,982.18 - Step 5: Solve for x
x = 41,496,947,982.18/257,243.40 - Step 6: Final answer
x = 161,313.95
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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.