Finding the Fourth Proportional to 230,892.21, 318,637.95 and 128,916.05
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Solution
The fourth proportional to 230,892.21, 318,637.95 and 128,916.05 is: 177,907.88
Step by Step Solution
- Step 1: Write the proportion equation
230,892.21 : 318,637.95 = 128,916.05 : x - Step 2: Convert to fraction form
230,892.21/318,637.95 = 128,916.05/x - Step 3: Cross multiply
230,892.21x = 318,637.95 × 128,916.05 - Step 4: Simplify right side
230,892.21x = 41,077,544,300.91 - Step 5: Solve for x
x = 41,077,544,300.91/230,892.21 - Step 6: Final answer
x = 177,907.88
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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.