Finding the Fourth Proportional to 211,948.20, 318,440.70 and 159,460.20
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Solution
The fourth proportional to 211,948.20, 318,440.70 and 159,460.20 is: 239,580.32
Step by Step Solution
- Step 1: Write the proportion equation
211,948.20 : 318,440.70 = 159,460.20 : x - Step 2: Convert to fraction form
211,948.20/318,440.70 = 159,460.20/x - Step 3: Cross multiply
211,948.20x = 318,440.70 × 159,460.20 - Step 4: Simplify right side
211,948.20x = 50,778,617,710.14 - Step 5: Solve for x
x = 50,778,617,710.14/211,948.20 - Step 6: Final answer
x = 239,580.32
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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.