Finding the Fourth Proportional to 318,314.10, 439,126.20 and 190,768.26
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Solution
The fourth proportional to 318,314.10, 439,126.20 and 190,768.26 is: 263,171.95
Step by Step Solution
- Step 1: Write the proportion equation
318,314.10 : 439,126.20 = 190,768.26 : x - Step 2: Convert to fraction form
318,314.10/439,126.20 = 190,768.26/x - Step 3: Cross multiply
318,314.10x = 439,126.20 × 190,768.26 - Step 4: Simplify right side
318,314.10x = 83,771,341,094.41 - Step 5: Solve for x
x = 83,771,341,094.41/318,314.10 - Step 6: Final answer
x = 263,171.95
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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.