Finding the Fourth Proportional to 258,485.18, 387,727.97 and 81,005.97
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Solution
The fourth proportional to 258,485.18, 387,727.97 and 81,005.97 is: 121,509.02
Step by Step Solution
- Step 1: Write the proportion equation
258,485.18 : 387,727.97 = 81,005.97 : x - Step 2: Convert to fraction form
258,485.18/387,727.97 = 81,005.97/x - Step 3: Cross multiply
258,485.18x = 387,727.97 × 81,005.97 - Step 4: Simplify right side
258,485.18x = 31,408,281,354.93 - Step 5: Solve for x
x = 31,408,281,354.93/258,485.18 - Step 6: Final answer
x = 121,509.02
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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.