Finding the Fourth Proportional to 289,980.05, 399,263.09 and 263,408.00
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Solution
The fourth proportional to 289,980.05, 399,263.09 and 263,408.00 is: 362,676.99
Step by Step Solution
- Step 1: Write the proportion equation
289,980.05 : 399,263.09 = 263,408.00 : x - Step 2: Convert to fraction form
289,980.05/399,263.09 = 263,408.00/x - Step 3: Cross multiply
289,980.05x = 399,263.09 × 263,408.00 - Step 4: Simplify right side
289,980.05x = 105,169,088,697.37 - Step 5: Solve for x
x = 105,169,088,697.37/289,980.05 - Step 6: Final answer
x = 362,676.99
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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.