Finding the Fourth Proportional to 258,539.13, 387,808.82 and 81,059.99
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Solution
The fourth proportional to 258,539.13, 387,808.82 and 81,059.99 is: 121,590.02
Step by Step Solution
- Step 1: Write the proportion equation
258,539.13 : 387,808.82 = 81,059.99 : x - Step 2: Convert to fraction form
258,539.13/387,808.82 = 81,059.99/x - Step 3: Cross multiply
258,539.13x = 387,808.82 × 81,059.99 - Step 4: Simplify right side
258,539.13x = 31,435,776,726.77 - Step 5: Solve for x
x = 31,435,776,726.77/258,539.13 - Step 6: Final answer
x = 121,590.02
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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.