Finding the Fourth Proportional to 258,945.11, 388,389.99 and 69,424.49
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Solution
The fourth proportional to 258,945.11, 388,389.99 and 69,424.49 is: 104,129.32
Step by Step Solution
- Step 1: Write the proportion equation
258,945.11 : 388,389.99 = 69,424.49 : x - Step 2: Convert to fraction form
258,945.11/388,389.99 = 69,424.49/x - Step 3: Cross multiply
258,945.11x = 388,389.99 × 69,424.49 - Step 4: Simplify right side
258,945.11x = 26,963,776,976.86 - Step 5: Solve for x
x = 26,963,776,976.86/258,945.11 - Step 6: Final answer
x = 104,129.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.