Finding the Fourth Proportional to 317,462.30, 438,117.66 and 209,845.70
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Solution
The fourth proportional to 317,462.30, 438,117.66 and 209,845.70 is: 289,600.08
Step by Step Solution
- Step 1: Write the proportion equation
317,462.30 : 438,117.66 = 209,845.70 : x - Step 2: Convert to fraction form
317,462.30/438,117.66 = 209,845.70/x - Step 3: Cross multiply
317,462.30x = 438,117.66 × 209,845.70 - Step 4: Simplify right side
317,462.30x = 91,937,107,045.06 - Step 5: Solve for x
x = 91,937,107,045.06/317,462.30 - Step 6: Final answer
x = 289,600.08
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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.