Finding the Fourth Proportional to 315,308.74, 435,135.30 and 172,077.99
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Solution
The fourth proportional to 315,308.74, 435,135.30 and 172,077.99 is: 237,472.67
Step by Step Solution
- Step 1: Write the proportion equation
315,308.74 : 435,135.30 = 172,077.99 : x - Step 2: Convert to fraction form
315,308.74/435,135.30 = 172,077.99/x - Step 3: Cross multiply
315,308.74x = 435,135.30 × 172,077.99 - Step 4: Simplify right side
315,308.74x = 74,877,207,802.05 - Step 5: Solve for x
x = 74,877,207,802.05/315,308.74 - Step 6: Final answer
x = 237,472.67
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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.