Finding the Fourth Proportional to 330,442.12, 456,028.14 and 187,230.07
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Solution
The fourth proportional to 330,442.12, 456,028.14 and 187,230.07 is: 258,387.70
Step by Step Solution
- Step 1: Write the proportion equation
330,442.12 : 456,028.14 = 187,230.07 : x - Step 2: Convert to fraction form
330,442.12/456,028.14 = 187,230.07/x - Step 3: Cross multiply
330,442.12x = 456,028.14 × 187,230.07 - Step 4: Simplify right side
330,442.12x = 85,382,180,574.17 - Step 5: Solve for x
x = 85,382,180,574.17/330,442.12 - Step 6: Final answer
x = 258,387.70
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1.5x scale
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.