Finding the Fourth Proportional to 316,471.07, 436,730.55 and 173,240.17
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Solution
The fourth proportional to 316,471.07, 436,730.55 and 173,240.17 is: 239,071.69
Step by Step Solution
- Step 1: Write the proportion equation
316,471.07 : 436,730.55 = 173,240.17 : x - Step 2: Convert to fraction form
316,471.07/436,730.55 = 173,240.17/x - Step 3: Cross multiply
316,471.07x = 436,730.55 × 173,240.17 - Step 4: Simplify right side
316,471.07x = 75,659,274,726.19 - Step 5: Solve for x
x = 75,659,274,726.19/316,471.07 - Step 6: Final answer
x = 239,071.69
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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.