Finding the Fourth Proportional to 307,987.74, 421,935.93 and 296,474.20
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Solution
The fourth proportional to 307,987.74, 421,935.93 and 296,474.20 is: 406,162.65
Step by Step Solution
- Step 1: Write the proportion equation
307,987.74 : 421,935.93 = 296,474.20 : x - Step 2: Convert to fraction form
307,987.74/421,935.93 = 296,474.20/x - Step 3: Cross multiply
307,987.74x = 421,935.93 × 296,474.20 - Step 4: Simplify right side
307,987.74x = 125,093,116,243.17 - Step 5: Solve for x
x = 125,093,116,243.17/307,987.74 - Step 6: Final answer
x = 406,162.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.