Finding the Fourth Proportional to 258,480.62, 387,721.08 and 81,001.62
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Solution
The fourth proportional to 258,480.62, 387,721.08 and 81,001.62 is: 121,502.48
Step by Step Solution
- Step 1: Write the proportion equation
258,480.62 : 387,721.08 = 81,001.62 : x - Step 2: Convert to fraction form
258,480.62/387,721.08 = 81,001.62/x - Step 3: Cross multiply
258,480.62x = 387,721.08 × 81,001.62 - Step 4: Simplify right side
258,480.62x = 31,406,035,588.15 - Step 5: Solve for x
x = 31,406,035,588.15/258,480.62 - Step 6: Final answer
x = 121,502.48
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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.