Finding the Fourth Proportional to 323,276.09, 484,913.81 and 86,612.31
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Solution
The fourth proportional to 323,276.09, 484,913.81 and 86,612.31 is: 129,918.38
Step by Step Solution
- Step 1: Write the proportion equation
323,276.09 : 484,913.81 = 86,612.31 : x - Step 2: Convert to fraction form
323,276.09/484,913.81 = 86,612.31/x - Step 3: Cross multiply
323,276.09x = 484,913.81 × 86,612.31 - Step 4: Simplify right side
323,276.09x = 41,999,505,451.53 - Step 5: Solve for x
x = 41,999,505,451.53/323,276.09 - Step 6: Final answer
x = 129,918.38
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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.