Finding the Fourth Proportional to 316,466.21, 436,753.07 and 189,139.07
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Solution
The fourth proportional to 316,466.21, 436,753.07 and 189,139.07 is: 261,029.66
Step by Step Solution
- Step 1: Write the proportion equation
316,466.21 : 436,753.07 = 189,139.07 : x - Step 2: Convert to fraction form
316,466.21/436,753.07 = 189,139.07/x - Step 3: Cross multiply
316,466.21x = 436,753.07 × 189,139.07 - Step 4: Simplify right side
316,466.21x = 82,607,066,349.98 - Step 5: Solve for x
x = 82,607,066,349.98/316,466.21 - Step 6: Final answer
x = 261,029.66
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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.