Finding the Fourth Proportional to 257,028.08, 354,715.08 and 143,887.28
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Solution
The fourth proportional to 257,028.08, 354,715.08 and 143,887.28 is: 198,573.59
Step by Step Solution
- Step 1: Write the proportion equation
257,028.08 : 354,715.08 = 143,887.28 : x - Step 2: Convert to fraction form
257,028.08/354,715.08 = 143,887.28/x - Step 3: Cross multiply
257,028.08x = 354,715.08 × 143,887.28 - Step 4: Simplify right side
257,028.08x = 51,038,988,036.18 - Step 5: Solve for x
x = 51,038,988,036.18/257,028.08 - Step 6: Final answer
x = 198,573.59
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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.