Finding the Fourth Proportional to 316,811.39, 436,849.47 and 201,908.18
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Solution
The fourth proportional to 316,811.39, 436,849.47 and 201,908.18 is: 278,410.07
Step by Step Solution
- Step 1: Write the proportion equation
316,811.39 : 436,849.47 = 201,908.18 : x - Step 2: Convert to fraction form
316,811.39/436,849.47 = 201,908.18/x - Step 3: Cross multiply
316,811.39x = 436,849.47 × 201,908.18 - Step 4: Simplify right side
316,811.39x = 88,203,481,421.66 - Step 5: Solve for x
x = 88,203,481,421.66/316,811.39 - Step 6: Final answer
x = 278,410.07
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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.