Finding the Fourth Proportional to 316,349.15, 436,561.81 and 173,109.21
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Solution
The fourth proportional to 316,349.15, 436,561.81 and 173,109.21 is: 238,890.70
Step by Step Solution
- Step 1: Write the proportion equation
316,349.15 : 436,561.81 = 173,109.21 : x - Step 2: Convert to fraction form
316,349.15/436,561.81 = 173,109.21/x - Step 3: Cross multiply
316,349.15x = 436,561.81 × 173,109.21 - Step 4: Simplify right side
316,349.15x = 75,572,870,045.27 - Step 5: Solve for x
x = 75,572,870,045.27/316,349.15 - Step 6: Final answer
x = 238,890.70
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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.