Finding the Fourth Proportional to 402,943.13, 556,039.62 and 221,625.80
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Solution
The fourth proportional to 402,943.13, 556,039.62 and 221,625.80 is: 305,831.55
Step by Step Solution
- Step 1: Write the proportion equation
402,943.13 : 556,039.62 = 221,625.80 : x - Step 2: Convert to fraction form
402,943.13/556,039.62 = 221,625.80/x - Step 3: Cross multiply
402,943.13x = 556,039.62 × 221,625.80 - Step 4: Simplify right side
402,943.13x = 123,232,724,290.27 - Step 5: Solve for x
x = 123,232,724,290.27/402,943.13 - Step 6: Final answer
x = 305,831.55
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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.