Finding the Fourth Proportional to 258,320.79, 387,480.63 and 71,331.75
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Solution
The fourth proportional to 258,320.79, 387,480.63 and 71,331.75 is: 106,997.47
Step by Step Solution
- Step 1: Write the proportion equation
258,320.79 : 387,480.63 = 71,331.75 : x - Step 2: Convert to fraction form
258,320.79/387,480.63 = 71,331.75/x - Step 3: Cross multiply
258,320.79x = 387,480.63 × 71,331.75 - Step 4: Simplify right side
258,320.79x = 27,639,671,429.00 - Step 5: Solve for x
x = 27,639,671,429.00/258,320.79 - Step 6: Final answer
x = 106,997.47
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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.