Finding the Fourth Proportional to 230,455.05, 318,029.23 and 128,486.87
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Solution
The fourth proportional to 230,455.05, 318,029.23 and 128,486.87 is: 177,312.58
Step by Step Solution
- Step 1: Write the proportion equation
230,455.05 : 318,029.23 = 128,486.87 : x - Step 2: Convert to fraction form
230,455.05/318,029.23 = 128,486.87/x - Step 3: Cross multiply
230,455.05x = 318,029.23 × 128,486.87 - Step 4: Simplify right side
230,455.05x = 40,862,580,331.21 - Step 5: Solve for x
x = 40,862,580,331.21/230,455.05 - Step 6: Final answer
x = 177,312.58
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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.