Finding the Fourth Proportional to 257,131.19, 385,945.55 and 124,105.09
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Solution
The fourth proportional to 257,131.19, 385,945.55 and 124,105.09 is: 186,277.70
Step by Step Solution
- Step 1: Write the proportion equation
257,131.19 : 385,945.55 = 124,105.09 : x - Step 2: Convert to fraction form
257,131.19/385,945.55 = 124,105.09/x - Step 3: Cross multiply
257,131.19x = 385,945.55 × 124,105.09 - Step 4: Simplify right side
257,131.19x = 47,897,804,667.60 - Step 5: Solve for x
x = 47,897,804,667.60/257,131.19 - Step 6: Final answer
x = 186,277.70
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1.5x scale
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.