Finding the Fourth Proportional to 306,643.13, 423,171.53 and 168,838.08
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Solution
The fourth proportional to 306,643.13, 423,171.53 and 168,838.08 is: 232,998.76
Step by Step Solution
- Step 1: Write the proportion equation
306,643.13 : 423,171.53 = 168,838.08 : x - Step 2: Convert to fraction form
306,643.13/423,171.53 = 168,838.08/x - Step 3: Cross multiply
306,643.13x = 423,171.53 × 168,838.08 - Step 4: Simplify right side
306,643.13x = 71,447,467,791.67 - Step 5: Solve for x
x = 71,447,467,791.67/306,643.13 - Step 6: Final answer
x = 232,998.76
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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.