Finding the Fourth Proportional to 316,236.98, 436,417.74 and 172,996.99
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Solution
The fourth proportional to 316,236.98, 436,417.74 and 172,996.99 is: 238,741.70
Step by Step Solution
- Step 1: Write the proportion equation
316,236.98 : 436,417.74 = 172,996.99 : x - Step 2: Convert to fraction form
316,236.98/436,417.74 = 172,996.99/x - Step 3: Cross multiply
316,236.98x = 436,417.74 × 172,996.99 - Step 4: Simplify right side
316,236.98x = 75,498,954,311.56 - Step 5: Solve for x
x = 75,498,954,311.56/316,236.98 - Step 6: Final answer
x = 238,741.70
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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.